Fix memory leak in test example

[bangarumahesh22]

This PR fixes a memory leak in the test.c example. Previously, an array allocated with malloc was not freed, causing 20 bytes of memory to remain allocated when the program exited.

Changes made:

Freed the allocated memory (ptr) before program exit to prevent the leak.

Verified using Dr. Memory that no memory leaks remain.

Verification:

Run ../build/bin/drmemory -- ./test to confirm no leaks reported.

Test compiled and ran successfully with gcc -g test.c -o test.

Impact:

This ensures proper memory management in the example code and prevents unnecessary memory leaks for users running the example.

[derekbruening]

Thank you for reaching out to contribute.

This PR fixes a memory leak in the test.c example. Previously, an array allocated with malloc was not freed, causing 20 bytes of memory to remain allocated when the program exited.

I'm not sure I understand: which "test.c example" are you referring to? Could you supply the full path? And your PR seems to be adding a brand new directory examples/, rather than editing an existing file?

[bangarumahesh22]

Hi @maintainers 👋

I’ve submitted this small fix for a memory leak in the test example.
The change frees the previously unfreed memory and has been verified using Dr. Memory.

Just checking in — please let me know if any updates or adjustments are needed.
Thank you for reviewing!

[derekbruening]

Hi @maintainers 👋

I’ve submitted this small fix for a memory leak in the test example. The change frees the previously unfreed memory and has been verified using Dr. Memory.

Just checking in — please let me know if any updates or adjustments are needed. Thank you for reviewing!

Please see my question at #2567 (comment)