`free` is Called on Arrays not Allocated by `malloc`

[heshuimu]

tarkit/DCTar.m

Line 442 in 62d1c23

char buffer[TAR_BLOCK_SIZE];

tarkit/DCTar.m

Lines 454 to 459 in 62d1c23

	char nameChar[USTAR_name_size];
	[self writeString:path toChar:nameChar withLength:USTAR_name_size];
	char unameChar[USTAR_uname_size];
	[self writeString:ownerName toChar:unameChar withLength:USTAR_uname_size];
	char gnameChar[USTAR_gname_size];
	[self writeString:groupName toChar:gnameChar withLength:USTAR_gname_size];

tarkit/DCTar.m

Lines 507 to 510 in 62d1c23

	free(buffer);
	free(nameChar);
	free(unameChar);
	free(gnameChar);

This causes runtime exceptions at least on iOS 12. There are several other places where free is called like this, the code snippet above is just an example.

[omochi]

There are more wrong free.

tarkit/DCTar.m

Line 219 in 2bc2873

free(block);

tarkit/DCTar.m

Line 372 in 2bc2873

free(nameBytes);

tarkit/DCTar.m

Line 384 in 2bc2873

free(sizeBytes);

tarkit/DCTar.m

Line 530 in 2bc2873

free(buffer);

I tried fix these free.
But other bugs are still exists.

[mikehouse]

I confirm, build from master crashes an app, have to use source code at 0.1.3 tag to fix this. Removing free fixes not all problems.