[PATCH 1/2] Fix mmap-thread-lookup.c unitialized memory usage

[Numfor Mbiziwo-Tiapo]

Running the perf test command after building perf with a memory
sanitizer causes a warning that says:
WARNING: MemorySanitizer: use-of-uninitialized-value... in mmap-thread-lookup.c
Initializing the go variable to 0 fixes this change.

Signed-off-by: Numfor Mbiziwo-Tiapo <n...@google.com>
---
 tools/perf/tests/mmap-thread-lookup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/mmap-thread-lookup.c 
b/tools/perf/tests/mmap-thread-lookup.c
index 5ede9b561d32..b1abf4752f35 100644
--- a/tools/perf/tests/mmap-thread-lookup.c
+++ b/tools/perf/tests/mmap-thread-lookup.c
@@ -52,7 +52,7 @@ static void *thread_fn(void *arg)
 {
        struct thread_data *td = arg;
        ssize_t ret;
-       int go;
+       int go = 0;
 
        if (thread_init(td))
                return NULL;
-- 
2.22.0.410.gd8fdbe21b5-goog