fix structure issue

Author: Nxer

src/main/java/com/Nxer/TwistSpaceTechnology/common/machine/GT_TileEntity_IndustrialMagicMatrix.java

@@ -3213,6 +3213,7 @@ public boolean checkMachine(IGregTechTileEntity aBaseMetaTileEntity, ItemStack a
             || checkPiece(STRUCTURE_PIECE_MAIN_ERR, horizontalOffSet, verticalOffSet, depthOffSet)) {
             if (blockTier > 0) {
                 mParallel = blockTier << 3;
+                return true;
             } else return false;
         }
         return false;