Initialize a_timing_info to prevent garbage reads from calls to pulse_playing in wave_pulse.c. [clang scan-build]

src/libespeak-ng/wave_pulse.c

 /*
  * Copyright (C) 2007, Gilles Casse <[email protected]>
- * Copyright (C) 2015 Reece H. Dunn
+ * Copyright (C) 2015-2016 Reece H. Dunn
  * eSpeak driver for PulseAudio
  * based on the XMMS PulseAudio Plugin
  *
 {
 	(void)theHandler; // unused
 
-	pa_timing_info a_timing_info;
+	pa_timing_info a_timing_info = {0};
 	int active = pulse_playing(&a_timing_info);
 	return active;
 }
 {
 	(void)theHandler; // unused
 
-	pa_timing_info a_timing_info;
+	pa_timing_info a_timing_info = {0};
 	pulse_playing(&a_timing_info);
 	return a_timing_info.read_index;
 }
 {
 	(void)theHandler; // unused
 
-	pa_timing_info a_timing_info;
+	pa_timing_info a_timing_info = {0};
 	pulse_playing(&a_timing_info);
 	return a_timing_info.write_index;
 }
 	if (!time || !stream)
 		return -1;
 
-	pa_timing_info a_timing_info;
+	pa_timing_info a_timing_info = {0};
 	pulse_playing(&a_timing_info);
 
 	if (sample > a_timing_info.read_index) {