[TIMOB-24270] iOS: Fix autorelease-crash when using kroll-thread

[hansemannn]

JIRA: https://jira.appcelerator.org/browse/TIMOB-24270

[hansemannn]

@vijaysingh-axway I'm not feeling save with the retain + autorelease solution so far, although it seem to work fine in all my use-cases. I'd love your opinion on this. The retain-cycle of the media property is a bit complicated (through different threads and contexts).

[vijaysingh-axway]

@hansemannn I was thinking something of using autorelease pool and retaining the image inside caller function, but I am not very sure. Let me think in more detail on this and will let you know.

[vijaysingh-axway]

While verifying with-
//#define TI_USE_KROLL_THREAD
#define USE_JSCORE_FRAMEWORK
I am getting memory leak .

@hansemannn Are you sure this solution is working fine .

[hansemannn]

I begin to think that the image is not really the problem, but the TiBlob is. Otherwise the issue would happen on both JSCore and TiCore.