[AC-1252] Webviews having <select> dropdown list crashing the app on multiple clicks.

{panel:title=Sample Code} var htmlContent = "onetwoonetwo"; var webview = Titanium.UI.createWebView(); webview.html = htmlContent; var window = Titanium.UI.createWindow(); window.add(webview); window.open(); {panel} *Try clicking the drop downs multiple times and your app will get crash with the following log.* {panel:title=crash log} [ERROR] : The application has crashed with an uncaught exception 'NSGenericException'. [ERROR] : Reason: [ERROR] : UIPopoverPresentationController () should have a non-nil sourceView or barButtonItem set before the presentation occurs. [ERROR] : Stack trace: [ERROR] : [ERROR] : 0 CoreFoundation 0x050aedda __exceptionPreprocess + 154 [ERROR] : 1 libobjc.A.dylib 0x04c81a97 objc_exception_throw + 44 [ERROR] : 2 UIKit 0x0249ba37 -[UIPopoverPresentationController presentationTransitionWillBegin] + 3086 [ERROR] : 3 UIKit 0x01da2f75 __71-[UIPresentationController _initViewHierarchyForPresentationSuperview:]_block_invoke + 1666 [ERROR] : 4 UIKit 0x01da1554 __56-[UIPresentationController runTransitionForCurrentState]_block_invoke + 226 [ERROR] : 5 UIKit 0x01dd521b __40+[UIViewController _scheduleTransition:]_block_invoke + 18 [ERROR] : 6 UIKit 0x01c9b62e ___afterCACommitHandler_block_invoke + 15 [ERROR] : 7 UIKit 0x01c9b5d9 _applyBlockToCFArrayCopiedToStack + 415 [ERROR] : 8 UIKit 0x01c9b3ee _afterCACommitHandler + 545 [ERROR] : 9 CoreFoundation 0x04fd1fbe __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30 [ERROR] : 10 CoreFoundation 0x04fd1f00 __CFRunLoopDoObservers + 400 [ERROR] : 11 CoreFoundation 0x04fc793a __CFRunLoopRun + 1226 [ERROR] : 12 CoreFoundation 0x04fc71ab CFRunLoopRunSpecific + 443 [ERROR] : 13 CoreFoundation 0x04fc6fdb CFRunLoopRunInMode + 123 [ERROR] : 14 GraphicsServices 0x068c524f GSEventRunModal + 192 [ERROR] : 15 GraphicsServices 0x068c508c GSEventRun + 104 [ERROR] : 16 UIKit 0x01c71e16 UIApplicationMain + 1526 [ERROR] : 17 HIP Mobile 0x000b0a28 main + 456 [ERROR] : 18 libdyld.dylib 0x06bb7ac9 start + 1 [ERROR] : [ERROR] : 2015-02-24 17:01:06.613 HIP Mobile[33936:2697052] *** Terminating app due to uncaught exception 'NSGenericException', reason: 'UIPopoverPresentationController () should have a non-nil sourceView or barButtonItem set before the presentation occurs.' [ERROR] : *** First throw call stack: [ERROR] : ( [ERROR] : 0 CoreFoundation 0x050aedf6 __exceptionPreprocess + 182 [ERROR] : 1 libobjc.A.dylib 0x04c81a97 objc_exception_throw + 44 [ERROR] : 2 UIKit 0x0249ba37 -[UIPopoverPresentationController presentationTransitionWillBegin] + 3086 [ERROR] : 3 UIKit 0x01da2f75 __71-[UIPresentationController _initViewHierarchyForPresentationSuperview:]_block_invoke + 1666 [ERROR] : 4 UIKit 0x01da1554 __56-[UIPresentationController runTransitionForCurrentState]_block_invoke + 226 [ERROR] : 5 UIKit 0x01dd521b __40+[UIViewController _scheduleTransition:]_block_invoke + 18 [ERROR] : 6 UIKit 0x01c9b62e ___afterCACommitHandler_block_invoke + 15 [ERROR] : 7 UIKit 0x01c9b5d9 _applyBlockToCFArrayCopiedToStack + 415 [ERROR] : 8 UIKit 0x01c9b3ee _afterCACommitHandler + 545 [ERROR] : 9 CoreFoundation 0x04fd1fbe __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30 [ERROR] : 10 CoreFoundation 0x04fd1f00 __CFRunLoopDoObservers + 400 [ERROR] : 11 CoreFoundation 0x04fc793a __CFRunLoopRun + 1226 [ERROR] : 12 CoreFoundation 0x04fc71ab CFRunLoopRunSpecific + 443 [ERROR] : 13 CoreFoundation 0x04fc6fdb CFRunLoopRunInMode + 123 [ERROR] : 14 GraphicsServices 0x068c524f GSEventRunModal + 192 [ERROR] : 15 GraphicsServices 0x068c508c GSEventRun + 104 [ERROR] : 16 UIKit 0x01c71e16 UIApplicationMain + 1526 [ERROR] : 17 HIP Mobile 0x000b0a28 main + 456 [ERROR] : 18 libdyld.dylib 0x06bb7ac9 start + 1 [ERROR] : ) [ERROR] : libc++abi.dylib: terminating with uncaught exception of type NSException {panel}