mingw: avoid memory leak when splitting PATH

In the (admittedly, concocted) case that PATH consists only of path delimiters, we would leak the duplicated string. Reported by Coverity. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed May 4, 2017 at 15:55 UTC 1a845a2c88e5b72acce33c9719ec36fcd0f9c877
1 file changed +3 -1
compat/mingw.c
+3 -1
@@ -961,8 +961,10 @@ static char **get_path_split(void)
961 ++n;
962 }
963 }
964 - if (!n)
964 + if (!n) {
965 + free(envpath);
966 return NULL;
967 + }
968
969 ALLOC_ARRAY(path, n + 1);
970 p = envpath;