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

Compilation with -DDEBUG_TIMING fails due to a missing header:

modules/alsa/alsa-source.c: In function 'check_left_to_record':
modules/alsa/alsa-source.c:426:9: warning: implicit declaration of function 'raise' [-Wimplicit-function-declaration]
modules/alsa/alsa-source.c:426:9: error: 'SIGTRAP' undeclared (first use in this function)

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

diff --git a/src/modules/alsa/alsa-source.c b/src/modules/alsa/alsa-source.c
index 97092bb5b2ddb641632a686146ed9a9fc8904989..dfad8170bfc1b043794fcedd282ae9c9d8a2b4b9 100644 (file)
--- a/src/modules/alsa/alsa-source.c
+++ b/src/modules/alsa/alsa-source.c
@@ -24,6 +24,7 @@
 #include <config.h>
 #endif
 
+#include <signal.h>
 #include <stdio.h>
 
 #include <asoundlib.h>