Fix Borland C++Builder 6 build error:

Expression syntax in function unicode_to_cp437
:-(

src/xpdev/unicode.c

@@ -653,11 +653,14 @@ char unicode_to_cp437(enum unicode_codepoint codepoint)
 			return '\xDF';
 
 		default:	// Look for a 1:1 match in the CP437 -> Unicode table
-			for(int i = 1; i < 0x100; i++) {
+		{
+			int i;
+			for(i = 1; i < 0x100; i++) {
 				if(cp437_unicode_tbl[i] == codepoint)
 					return i;
 			}
 			break;
+		}
 	}
 
 	return '\0'; // Not-mapped