Windows compilation fix: Added typecast (const char* to char *)

client/mysql.cc

@@ -993,7 +993,7 @@ static int read_lines(bool execute_commands)
       unsigned long clen;
       do
       {
-        line= my_cgets(tmpbuf.ptr(), tmpbuf.alloced_length()-1, &clen);
+        line= my_cgets((char *) tmpbuf.ptr(), tmpbuf.alloced_length()-1, &clen);
         buffer.append(line, clen);
         /* 
            if we got buffer fully filled than there is a chance that