Update after commit b0076a4709 to fix jvm rtl compilation error

rtl/java/justrings.inc

@@ -626,7 +626,7 @@ function StringToWideChar(const Src : RawByteString;Dest : PWideChar;DestSize :
 
 {$define FPC_HAS_UNICODEFROMLOCALECHARS}
 function UnicodeFromLocaleChars(CodePage, Flags: Cardinal; LocaleStr: PAnsiChar;
-  LocaleStrLen: Integer; UnicodeStr: PWideChar; UnicodeStrLen: Integer): Integer; overload;
+  LocaleStrLen: SizeInt; UnicodeStr: PWideChar; UnicodeStrLen: SizeInt): SizeInt; overload;
 
 var
   temp: widestring;