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/busname.c b/src/core/busname.c
index d3c1282239..4020e9dd3c 100644
--- a/src/core/busname.c
+++ b/src/core/busname.c
@@ -95,8 +95,7 @@ static void busname_done(Unit *u) {
 
         assert(n);
 
-        free(n->name);
-        n->name = NULL;
+        n->name = mfree(n->name);
 
         busname_free_policy(n);
         busname_unwatch_control_pid(n);