[PATCH BlueZ 2/2] tools/test-runner: Fix errors reported by scan-build

[Tedd Ho-Jeong An <hj.tedd.an@xxxxxxxxx>]

From: Tedd Ho-Jeong An <tedd.an@xxxxxxxxx>

This patch fixes the errors reported by the scan-build.

tools/test-runner.c:315:2: warning: Null pointer passed to 1st parameter
expecting 'nonnull' [core.NonNullParamChecker]
        execve(argv[0], argv, qemu_envp);
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tools/test-runner.c:554:6: warning: Null pointer passed to 1st parameter
expecting 'nonnull' [core.NonNullParamChecker]
        if (chdir(home + 5) < 0) {
            ^~~~~~~~~~~~~~~

tools/test-runner.c:638:6: warning: Null pointer passed to 1st parameter
expecting 'nonnull' [core.NonNullParamChecker]
        if (chdir(home + 5) < 0) {
            ^~~~~~~~~~~~~~~

tools/test-runner.c:695:6: warning: Null pointer passed to 1st parameter
expecting 'nonnull' [core.NonNullParamChecker]
        if (chdir(home + 5) < 0) {
            ^~~~~~~~~~~~~~~

tools/test-runner.c:984:3: warning: Value stored to 'serial_fd' is never
read [deadcode.DeadStores]
                serial_fd = -1;
                ^           ~~
---
 tools/test-runner.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/test-runner.c b/tools/test-runner.c
index 6886d66c6..5ab8e57a0 100644
--- a/tools/test-runner.c
+++ b/tools/test-runner.c
@@ -269,6 +269,11 @@ static void start_qemu(void)
 
 	pos = (sizeof(qemu_argv) / sizeof(char *)) - 1;
 
+	/* Make sure qemu_binary is not null */
+	if (!qemu_binary) {
+		fprintf(stderr, "No QEMU binary is set\n");
+		exit(1);
+	}
 	argv[0] = (char *) qemu_binary;
 
 	if (audio_support) {
@@ -800,6 +805,11 @@ static void run_command(char *cmdname, char *home)
 	pid_t pid, dbus_pid, daemon_pid, monitor_pid, emulator_pid,
 	      dbus_session_pid, udevd_pid;
 
+	if (!home) {
+		perror("Invalid parameter: TESTHOME");
+		return;
+	}
+
 	if (num_devs) {
 		const char *node = "/dev/ttyS1";
 		unsigned int basic_flags, extra_flags;
@@ -979,10 +989,8 @@ start_next:
 	if (udevd_pid > 0)
 		kill(udevd_pid, SIGTERM);
 
-	if (serial_fd >= 0) {
+	if (serial_fd >= 0)
 		close(serial_fd);
-		serial_fd = -1;
-	}
 }
 
 static void run_tests(void)
-- 
2.34.1