tests: Fix warnings found on Mac.

test_pbx used raise without explicitly including signal.h.  On Mac for
some reason nothing else includes it.

test_logger checked if an unsigned int was negative.  Switch the
variable to 'int' so that error check can be effective.

Change-Id: Ie1db5dd1818ac25cc2ae41b644f848b5865b1362

tests/test_logger.c

@@ -190,7 +190,7 @@ static char *handle_cli_performance_test(struct ast_cli_entry *e, int cmd, struc
 
 static char *handle_cli_queue_test(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 {
-	unsigned int level;
+	int level;
 	int current_queue_limit;
 	unsigned int x;
 	struct timeval start, end;
@@ -220,7 +220,7 @@ static char *handle_cli_queue_test(struct ast_cli_entry *e, int cmd, struct ast_
 		ast_cli(a->fd, "Test: Failed, could not register level 'queuetest'.\n");
 		return CLI_SUCCESS;
 	}
-	ast_cli(a->fd, "Test: got level %u for 'queuetest'.\n", level);
+	ast_cli(a->fd, "Test: got level %d for 'queuetest'.\n", level);
 
 	if (ast_logger_create_channel(tmppath, "queuetest") != AST_LOGGER_SUCCESS) {
 		ast_cli(a->fd, "Test: Unable to create logger channel '%s'\n", tmppath);

tests/test_pbx.c

@@ -37,6 +37,8 @@
 #include "asterisk/pbx.h"
 #include "asterisk/test.h"
 
+#include <signal.h>
+
 /*!
  * If we determine that we really need
  * to be able to register more than 10