branch: reset instead of release a strbuf

Our documentation advises to not re-use a strbuf, after strbuf_release has been called on it. Use the proper reset instead. Currently 'strbuf_release' releases and re-initializes the strbuf, so it is safe, but slow. 'strbuf_reset' only resets the internal length variable, such that this could also be accounted for as a micro-optimization. Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Stefan Beller committed Oct 3, 2017 at 15:17 UTC a9155c50bd52b7e27224e9588780ce5f972fa98d
1 file changed +3 -2
builtin/branch.c
+3 -2
@@ -216,7 +216,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
216 if (!head_rev)
217 die(_("Couldn't look up commit object for HEAD"));
218 }
219 - for (i = 0; i < argc; i++, strbuf_release(&bname)) {
219 + for (i = 0; i < argc; i++, strbuf_reset(&bname)) {
220 char *target = NULL;
221 int flags = 0;
222
@@ -281,8 +281,9 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
281 }
282
283 free(name);
284 + strbuf_release(&bname);
285
285 - return(ret);
286 + return ret;
287 }
288
289 static int calc_maxwidth(struct ref_array *refs, int remote_bonus)