[tip:perf/core] perf help: No need to use strbuf_remove()

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  d1130686f463e6feff19196475c3c15b1923c525
Gitweb:     http://git.kernel.org/tip/d1130686f463e6feff19196475c3c15b1923c525
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 23 Feb 2016 16:18:37 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 23 Feb 2016 16:18:37 -0300

perf help: No need to use strbuf_remove()

It is the only user of this function, just use the strlen() to skip
the prefix.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-blao710l5cd5hmwrhy51ftgq@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/builtin-help.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 96c1a4c..f4dd2b4 100644
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -86,8 +86,7 @@ static int check_emacsclient_version(void)
 		return -1;
 	}
 
-	strbuf_remove(&buffer, 0, strlen("emacsclient"));
-	version = atoi(buffer.buf);
+	version = atoi(buffer.buf + strlen("emacsclient"));
 
 	if (version < 22) {
 		fprintf(stderr,