updated for version 7.3.159

Problem:    Using uninitialized pointer when out of memory.
Solution:   Check for NULL return value.

src/mbyte.c

@@ -4129,7 +4129,7 @@ iconv_string(vcp, str, slen, unconvlenp, resultlenp)
 	done = to - (char *)result;
     }
 
-    if (resultlenp != NULL)
+    if (resultlenp != NULL && result != NULL)
 	*resultlenp = (int)(to - (char *)result);
     return result;
 }

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    159,
 /**/
     158,
 /**/