Change in flashrom[master]: Enable dynamic memory allocation checks for cmocka unit tests.

[Angel Pons (Code Review)]

Attention is currently required from: Anastasia Klimchuk.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/51243 )

Change subject: Enable dynamic memory allocation checks for cmocka unit tests.
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Patch Set 1: Code-Review+1

(2 comments)

Commit Message:

https://review.coreboot.org/c/flashrom/+/51243/comment/e78b5ebc_8f8fbacd 
PS1, Line 7: .
nit: no trailing period in the commit summary

File tests/flashrom.c:

https://review.coreboot.org/c/flashrom/+/51243/comment/6feefcf8_34efa83e 
PS1, Line 31: 	free(text);
I'd define a helper macro to avoid repeating this pattern:

#define assert_string_equal_with_free(text, expected)	\
    do {						\
    	assert_string_equal(text, expected);	\
    	free(text);				\
    while (0)

Two things to note:
- I've intentionally used a macro instead of a function. Because `assert_string_equal` is a macro that uses `__FILE__` and `__LINE__`, using a helper function would result in the wrong line number being printed.
- The do-while construct in the macro is intentional: https://gcc.gnu.org/onlinedocs/cpp/Swallowing-the-Semicolon.html