patch 8.1.0139: Lua tests fail on some platforms

Problem:    Lua tests fail on some platforms.
Solution:   Accept a hex number with and without "0x". (Ken Takata,
            closes #3137)

src/version.c

@@ -789,6 +789,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    139,
 /**/
     138,
 /**/