fixes liquid loss on block-neighbor update

PipeTransportLiquids.patch

diff --git a/buildcraft/common/net/minecraft/src/buildcraft/transport/PipeTransportLiquids.java b/buildcraft/common/net/minecraft/src/buildcraft/transport/PipeTransportLiquids.java
index 0164797..7d6250b 100755
--- a/buildcraft/common/net/minecraft/src/buildcraft/transport/PipeTransportLiquids.java
+++ b/buildcraft/common/net/minecraft/src/buildcraft/transport/PipeTransportLiquids.java
@@ -501,8 +501,8 @@ public class PipeTransportLiquids extends PipeTransport implements ILiquidContai
 
 			pos.moveForwards(1);
 
-			if (!canReceiveLiquid(pos)) {
+			if (!Utils.checkPipesConnections(worldObj, (int) pos.x, (int) pos.y,
+					(int) pos.z, xCoord, yCoord, zCoord)) {
 				side[i].reset();
 			}
 		}