patch 7.4.1238

Problem:    Can't handle two messages right after each other.
Solution:   Find the end of the JSON.  Read more when incomplete.  Add a C
            test for the JSON decoding.

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1238,
 /**/
     1237,
 /**/