Fixed bug in stream.c where bits_per_sample is not set properly

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@327 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjmedia/include/pjmedia.h b/pjmedia/include/pjmedia.h
index 59ec1a6..9a8c423 100644
--- a/pjmedia/include/pjmedia.h
+++ b/pjmedia/include/pjmedia.h
@@ -40,6 +40,7 @@
 #include <pjmedia/sdp_neg.h>
 #include <pjmedia/session.h>
 #include <pjmedia/sound.h>
+#include <pjmedia/sound_port.h>
 #include <pjmedia/wave.h>
 
 #endif	/* __PJMEDIA_H__ */