rasapi32: RasEnumConnections now returns correct buffer size (zero) when there are zero connections available.

dlls/rasapi32/rasapi.c

diff --git a/dlls/rasapi32/rasapi.c b/dlls/rasapi32/rasapi.c
index a2dae0c..0977ffe 100644
--- a/dlls/rasapi32/rasapi.c
+++ b/dlls/rasapi32/rasapi.c
@@ -102,6 +102,7 @@
 	/* Remote Access Service stuff is done by underlying OS anyway */
 	FIXME("(%p,%p,%p),stub!\n",rca,lpcb,lpcConnections);
 	FIXME("RAS support is not implemented! Configure program to use LAN connection/winsock instead!\n");
+	*lpcb = 0; /* size of buffer needed to enumerate connections */
 	*lpcConnections = 0; /* no RAS connections available */
 
 	return 0;
@@ -114,6 +115,7 @@
 	/* Remote Access Service stuff is done by underlying OS anyway */
 	FIXME("(%p,%p,%p),stub!\n",rcw,lpcb,lpcConnections);
 	FIXME("RAS support is not implemented! Configure program to use LAN connection/winsock instead!\n");
+	*lpcb = 0; /* size of buffer needed to enumerate connections */
 	*lpcConnections = 0; /* no RAS connections available */
 
 	return 0;