Use correct check for wire_server_dev.

Sponsored by:	Netflix

gtests/net/packetdrill/config.c

@@ -330,11 +330,6 @@ void finalize_config(struct config *config)
 			die("wire_server_ip not specified\n");
 		}
 	}
-	if (config->is_wire_server) {
-		if (config->wire_server_device == NULL) {
-			die("%s: wire_server_dev not specified\n");
-		}
-	}
 }
 
 /* Expect that arg is comma-delimited, allowing for spaces. */

gtests/net/packetdrill/logging.h

@@ -28,7 +28,7 @@
 #include "types.h"
 
 /* Enable this to get debug logging. */
-#define DEBUG_LOGGING 0
+#define DEBUG_LOGGING 1
 
 /* Use a gcc variadic macro to conditionally compile debug printing. */
 #define DEBUGP(...)				\

gtests/net/packetdrill/packetdrill.c

@@ -87,7 +87,14 @@ int main(int argc, char *argv[])
 			show_usage();
 			exit(EXIT_FAILURE);
 		}
-
+		if (config.is_wire_server) {
+			if (config.wire_server_device == NULL) {
+				fprintf(stderr,
+					"error: wire_server_dev must be specified\n");
+				show_usage();
+				exit(EXIT_FAILURE);
+			}
+		}
 		run_wire_server(&config);
 		return 0;
 	}