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b628fac5ea
free and clear the gl_pathv pointer in the glob_t structure. Such breaks the invariant of the glob_t structure, as stated in the comment right in front of the globextend() function. If gl_pathv was non-NULL, then gl_pathc was > 0. Making gl_pathv a NULL pointer without also setting gl_pathc to 0 is wrong. Since we otherwise don't free the memory associated with a glob_t in error cases, it's unlikely that this change will cause a memory leak that wasn't already there to begin with. Callers of glob(3) must call globfree(3) irrespective of whether glob(3) returned an error or not.