[iOS] Bad access exception thrown on deploying build on devices with iOS version 10 or lower.

Steps To Reproduce:

1. Create a project.
2. Switch platform to iOS
3. Build and run in Xcode.

Expected Result: Build runs on the device.

Observed Result: Build doesn't run on the device and Bad access exception is thrown.

Note: ** Devices Tested On:
1. iPad 3: OS Version : 9.3.5
2. iPhone 5: OS Version: 10
3. iPad Mini4: 11.4.1
4. iPad Pro :iOS 12

**Works fine on iOS Version 11 and 12

Stack Trace:

2018-12-21 12:26:58.596 ProductName[200:4067] Built from 'trunk' branch, Version '2019.1.0a12 (5175bce2e5d4)', Build type 'Release', Scripting Backend 'il2cpp'
2018-12-21 12:26:58.620 ProductName[200:4067] -> registered mono modules 0xaf72f0
-> applicationDidFinishLaunching()
ProductName was compiled with optimization - stepping may behave oddly; variables may not be available.
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=EXC_ARM_DA_ALIGN, address=0x16d2be44)
* frame #0: 0x00636688 ProductName`::JobQueue() [inlined] atomic_store_explicit<atomic_word2, memory_order_relaxed_t> at ExtendedAtomicOps-clang-gcc.h:124 [opt]
frame #1: 0x00636680 ProductName`::JobQueue() at JobQueue.cpp:188 [opt]
frame #2: 0x0063868c ProductName`::CreateJobQueue() [inlined] JobQueue at JobQueue.cpp:181 [opt]
frame #3: 0x00638674 ProductName`::CreateJobQueue() at JobQueue.cpp:1727 [opt]
frame #4: 0x00635d34 ProductName`::CreateJobSystem() at JobSystem.cpp:14 [opt]
frame #5: 0x0065c994 ProductName`::InitializeEngineNoGraphics() at SaveAndLoadHelper.cpp:206 [opt]
frame #6: 0x0066addc ProductName`::PlayerInitEngineNoGraphics() at Player.cpp:382 [opt]
frame #7: 0x00877e44 ProductName`::UnityInitApplicationNoGraphics() at LibEntryPoint.mm:204 [opt]
frame #8: 0x000fdbba ProductName`::-[UnityAppController application:didFinishLaunchingWithOptions:](self=0x16ec2de0, _cmd=<unavailable>, application=<unavailable>, launchOptions=<unavailable>) at UnityAppController.mm:254 [opt]
frame #9: 0x255d7784 UIKit`-[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 392
frame #10: 0x257ff2d0 UIKit`-[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 3080
frame #11: 0x25803284 UIKit`-[UIApplication _runWithMainScene:transitionContext:completion:] + 1588
frame #12: 0x2581783c UIKit`__84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke3286 + 36
frame #13: 0x258007b2 UIKit`-[UIApplication workspaceDidEndTransaction:] + 134
frame #14: 0x2268ac06 FrontBoardServices`__FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 18
frame #15: 0x2268aab8 FrontBoardServices`-[FBSSerialQueue _performNext] + 224
frame #16: 0x2268adb8 FrontBoardServices`-[FBSSerialQueue _performNextFromRunLoopSource] + 48
frame #17: 0x20fa9dfe CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 14
frame #18: 0x20fa99ec CoreFoundation`__CFRunLoopDoSources0 + 452
frame #19: 0x20fa7d5a CoreFoundation`__CFRunLoopRun + 794
frame #20: 0x20ef7228 CoreFoundation`CFRunLoopRunSpecific + 520
frame #21: 0x20ef7014 CoreFoundation`CFRunLoopRunInMode + 108
frame #22: 0x255d0c3c UIKit`-[UIApplication _run] + 524
frame #23: 0x255cb188 UIKit`UIApplicationMain + 144
frame #24: 0x000e4bfe ProductName`main(argc=<unavailable>, argv=<unavailable>) at main.mm:41 [opt]
frame #25: 0x20b9f872 libdyld.dylib`start + 2
(lldb)

Reproducible On:
2019.1.0a12

Not Reproducible On:
2019.1.0a11