[PATCH] perf util config : Modify size factor of snprintf

[Sihyeon Jang]

According to definition of snprintf, it gets size factor including null('\0') 
byte.
So '-1' is not neccessary. Also it will be helpful unfied style with other 
cases. (eg. builtin-script.c)

Cc: Jiri Olsa <jo...@kernel.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Signed-off-by: Sihyeon Jang <uneedsihy...@gmail.com>
---
 tools/perf/util/config.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 5ac157056cdf..bce980fa9f41 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -811,14 +811,14 @@ int config_error_nonbool(const char *var)
 void set_buildid_dir(const char *dir)
 {
        if (dir)
-               scnprintf(buildid_dir, MAXPATHLEN-1, "%s", dir);
+               scnprintf(buildid_dir, MAXPATHLEN, "%s", dir);
 
        /* default to $HOME/.debug */
        if (buildid_dir[0] == '\0') {
                char *home = getenv("HOME");
 
                if (home) {
-                       snprintf(buildid_dir, MAXPATHLEN-1, "%s/%s",
+                       snprintf(buildid_dir, MAXPATHLEN, "%s/%s",
                                 home, DEBUG_CACHE_DIR);
                } else {
                        strncpy(buildid_dir, DEBUG_CACHE_DIR, MAXPATHLEN-1);
-- 
2.17.1