patch 7.4.2045

Problem:    Memory leak when using a function callback.
Solution:   Don't save the function name when it's in the partial.

src/channel.c

@@ -1122,7 +1122,12 @@ set_callback(
 {
     free_callback(*cbp, *pp);
     if (callback != NULL && *callback != NUL)
-	*cbp = vim_strsave(callback);
+    {
+	if (partial != NULL)
+	    *cbp = partial->pt_name;
+	else
+	    *cbp = vim_strsave(callback);
+    }
     else
 	*cbp = NULL;
     *pp = partial;

src/version.c

@@ -758,6 +758,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2045,
 /**/
     2044,
 /**/