media_recorder: fix start time in startRecording

Whenever startRecording() is called and path_ is not empty (new API)
the start time variable is left uninitialized.

This commit addresses this issue.

Change-Id: I9020e91695c6803d881967999d868d4ba4fd1c72
Reviewed-by: Philippe Gorley <philippe.gorley@savoirfairelinux.com>

src/media/media_recorder.cpp

@@ -144,10 +144,11 @@ MediaRecorder::toggleRecording()
 int
 MediaRecorder::startRecording()
 {
-    if (path_.empty()) {
-        // FIXME deprecated code, will be removed once all clients transitioned to startRecording(path).
     std::time_t t = std::time(nullptr);
     startTime_ = *std::localtime(&t);
+
+    if (path_.empty()) {
+        // FIXME deprecated code, will be removed once all clients transitioned to startRecording(path).
         std::stringstream ss;
         ss << std::put_time(&startTime_, "%Y%m%d-%H%M%S");
         filename_ = ss.str();