Fixed the array access beyond bounds. #308
Merged
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It has crashed for some projects with following stacktrace.
NSRangeException: *** -[__NSArrayI objectAtIndex:]: index 3 beyond bounds [0 .. 2]
@ 0 CoreFoundation 0x00007fff87bf8f56 __exceptionPreprocess + 198
@ 1 libobjc.A.dylib 0x00007fff8fac7dee objc_exception_throw + 43
@ 2 CoreFoundation 0x00007fff87ba2370 -[__NSArrayI objectAtIndex:] + 208
@ 3 appledoc 0x00000001053eff60 _mh_execute_header + 155488
...
So, I added the bounds checking.