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>

diff --git a/compat/mingw.c b/compat/mingw.c
index 3fbfda5..fe0e3cc 100644 (file)
--- 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;