updated for version 7.3.1146

Problem:    New regexp engine: look-behind match not checked when followed by
            zero-width match.
Solution:   Do the look-behind match before adding the zero-width state.

src/version.c

@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1146,
 /**/
     1145,
 /**/