Cleanup if an invalid option is given.

Cleanup the temporary files and memory if iverilog is given
an invalid option.

driver/main.c

@@ -866,6 +866,20 @@ int main(int argc, char **argv)
 		  break;
 		case '?':
 		default:
+		  fclose(source_file);
+		  remove(source_path);
+		  free(source_path);
+		  fclose(defines_file);
+		  remove(defines_path);
+		  free(defines_path);
+		  fclose(iconfig_file);
+		  remove(iconfig_path);
+		  free(iconfig_path);
+		  remove(compiled_defines_path);
+		  free(compiled_defines_path);
+		  while( (command_filename = get_cmd_file()) ) {
+			free(command_filename);
+		  }
 		  return 1;
 	    }
       }