Resolve 'Unused Result' Warning from proc-empty-vm.c

From: angquan yu <[email protected]>

In tools/testing/selftests/proc/proc-empty->because the return value of a write call was being ignored. This call was partof a conditional debugging block (if (0) { ... }), which meant it would neveractually execute.

This patch removes the unused debug write call. This cleanup resolves the compi>warning about ignoring the result of write declared with the warn_unused_resultattribute.

Removing this code also improves the clarity and maintainability of the function, as it eliminates a non-functional block of code.

This is original warning: proc-empty-vm.c: In function ‘test_proc_pid_statm’ :proc-empty-vm.c:385:17:
warning: ignoring return value of ‘write’
declared with>385 | write(1, buf, rv);|

---
 tools/testing/selftests/proc/proc-empty-vm.c | 2 ++
 1 file changed, 2 insertions(+)

index 5e7020630..d231e61e4 100644
@@ -383,8 +383,10 @@ static int test_proc_pid_statm(pid_t pid)
 	assert(rv <= sizeof(buf));
 	if (0) {
 		ssize_t written = write(1, buf, rv);
+
 		if (written == -1) {
 			perror("write failed to /proc/${pid}");
+			return EXIT_FAILURE;
 		}
 	}
 

2.39.2