[PATCH v2 1/2] perf probe: Fix uninitialized variable

[James Clark]

Since the linked fixes: commit, err is returned uninitialized due to the
removal of "return 0". Initialize err to fix it.

This fixes the following intermittent test failure on release builds:

 $ perf test "testsuite_probe"
 ...
 -- [ FAIL ] -- perf_probe :: test_invalid_options :: mutually exclusive options :: -L foo -V bar (output regexp parsing)
 Regexp not found: \"Error: switch .+ cannot be used with switch .+\"
 ...

Fixes: 080e47b2a237 ("perf probe: Introduce quotation marks support")
Tested-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Reviewed-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Acked-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Signed-off-by: James Clark <james.clark@xxxxxxxxxx>
---
 tools/perf/util/probe-event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 6d51a4c98ad7..eaa0318e9b87 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -1370,7 +1370,7 @@ int parse_line_range_desc(const char *arg, struct line_range *lr)
 {
 	char *buf = strdup(arg);
 	char *p;
-	int err;
+	int err = 0;
 
 	if (!buf)
 		return -ENOMEM;
-- 
2.34.1