tree-wide: use coccinelle to patch a lot of code to use mfree()

This replaces this:

        free(p);
        p = NULL;

by this:

        p = mfree(p);

Change generated using coccinelle. Semantic patch is added to the
sources.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/core/automount.c b/src/core/automount.c
index b8171ddad7..5bb61b95d3 100644
--- a/src/core/automount.c
+++ b/src/core/automount.c
@@ -127,8 +127,7 @@ static void automount_done(Unit *u) {
 
         unmount_autofs(a);
 
-        free(a->where);
-        a->where = NULL;
+        a->where = mfree(a->where);
 
         set_free(a->tokens);
         a->tokens = NULL;