Fixed misc warnings/errors in Solaris build

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@355 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjmedia/include/pjmedia.h b/pjmedia/include/pjmedia.h
index 9a8c423..8cdc0b7 100644
--- a/pjmedia/include/pjmedia.h
+++ b/pjmedia/include/pjmedia.h
@@ -38,6 +38,7 @@
 #include <pjmedia/rtp.h>
 #include <pjmedia/sdp.h>
 #include <pjmedia/sdp_neg.h>
+#include <pjmedia/silencedet.h>
 #include <pjmedia/session.h>
 #include <pjmedia/sound.h>
 #include <pjmedia/sound_port.h>
diff --git a/pjmedia/include/pjmedia/silencedet.h b/pjmedia/include/pjmedia/silencedet.h
index f251c08..4e82397 100644
--- a/pjmedia/include/pjmedia/silencedet.h
+++ b/pjmedia/include/pjmedia/silencedet.h
@@ -130,7 +130,14 @@
 					      pj_uint32_t level);
 
 
+/**
+ * Declaration linear2ulaw
+ */
+unsigned char linear2ulaw(int pcm_val);
+
+
 PJ_END_DECL
 
+
 #endif	/* __PJMEDIA_SILENCE_DET_H__ */