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>

1 files changed, 3 insertions, 1 deletions

diff --git a/compat/mingw.c b/compat/mingw.c
index 3fbfda5978..fe0e3ccd24 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -961,8 +961,10 @@ static char **get_path_split(void)
 			++n;
 		}
 	}
-	if (!n)
+	if (!n) {
+		free(envpath);
 		return NULL;
+	}
 
 	ALLOC_ARRAY(path, n + 1);
 	p = envpath;