alsa-sink: add missing header 'signal.h'

Compilation with -DDEBUG_TIMING fails due to a missing header:

modules/alsa/alsa-sink.c: In function 'check_left_to_play':
modules/alsa/alsa-sink.c:453:9: warning: implicit declaration of function 'raise' [-Wimplicit-function-declaration]
modules/alsa/alsa-sink.c:453:9: error: 'SIGTRAP' undeclared (first use in this function)

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>

diff --git a/src/modules/alsa/alsa-sink.c b/src/modules/alsa/alsa-sink.c
index c3d18e39c8c7483598d32a18f5b1611a405a9d40..1bee8f3dc7e2123fed17aaca0cf078936b8931f5 100644 (file)
--- a/src/modules/alsa/alsa-sink.c
+++ b/src/modules/alsa/alsa-sink.c
@@ -24,6 +24,7 @@
 #include <config.h>
 #endif
 
+#include <signal.h>
 #include <stdio.h>
 
 #include <asoundlib.h>