Fix infinite slide in multiplayer.

pm_shared/pm_shared.c

@@ -3312,8 +3312,8 @@ void PM_Move( struct playermove_s *ppmove, int server )
 		pmove->flags &= ~FL_ONGROUND;
 	}
 
-	// In single player, reset friction after each movement to FrictionModifier Triggers work still.
-	if( !pmove->multiplayer && ( pmove->movetype == MOVETYPE_WALK ) )
+	// Reset friction after each movement to FrictionModifier Triggers work still.
+	if( pmove->movetype == MOVETYPE_WALK )
 	{
 		pmove->friction = 1.0f;
 	}