patch 7.4.1192

Problem:    Can't build with FEAT_EVAL but without FEAT_MBYTE. (John
            Marriott)
Solution:   Add #ifdef for FEAT_MBYTE.

src/json.c

@@ -68,7 +68,12 @@ write_string(garray_T *gap, char_u *str)
 		default:
 		    if (c >= 0x20)
 		    {
+#ifdef FEAT_MBYTE
 			numbuf[mb_char2bytes(c, numbuf)] = NUL;
+#else
+			numbuf[0] = c;
+			numbuf[1] = NUL;
+#endif
 			ga_concat(gap, numbuf);
 		    }
 		    else

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1192,
 /**/
     1191,
 /**/