Add missing headers includes for FreeBSD.

This removes the implicit declarations of send() and pthread_sigmask().

src/pulse/thread-mainloop.c

@@ -24,6 +24,10 @@
 #include <config.h>
 #endif
 
+#ifndef OS_IS_WIN32
+#include <pthread.h>
+#endif
+
 #include <signal.h>
 #include <stdio.h>
 

src/pulsecore/core-util.c

@@ -43,6 +43,7 @@
 #include <regex.h>
 #include <langinfo.h>
 #include <sys/utsname.h>
+#include <sys/socket.h>
 
 #ifdef HAVE_STRTOF_L
 #include <locale.h>