File fix_aarch64_build.patch of Package mysql-workbench

--- mysql-workbench-community-6.3.10-src.orig/library/sql.parser/source/ctype-utf8.cpp	2018-04-30 13:12:07.538390814 +0200
+++ mysql-workbench-community-6.3.10-src/library/sql.parser/source/ctype-utf8.cpp	2018-04-30 13:12:59.268602104 +0200
@@ -3869,7 +3869,7 @@ static uint16 uni_FF20_FF5F[64]=
 
 static int hexlo(int x)
 {
-  static char hex_lo_digit[256]=
+  static signed char hex_lo_digit[256]=
   {
     -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* ................ */
     -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, /* ................ */