Fix missing return

This resolves Bug 2439

Signed-off-by: François Andriot <francois.andriot@free.fr>

src/watools.cpp

@@ -192,6 +192,8 @@ int WATools::availableNetworks( const char* _ifname ) //returns a list of availa
 		i++;
 	} while (scan = scan->next);
 	printf( "WATools: Networks found: %i\n", i );
+	
+	return i;
 }