Fix use of uninitialized data

src/map.cpp

@@ -3660,8 +3660,7 @@ void MMVManip::initialEmerge(v3s16 blockpos_min, v3s16 blockpos_max,
 				block = svrmap->emergeBlock(p, false);
 				if (block == NULL)
 					block = svrmap->createBlock(p);
-				else
-					block->copyTo(*this);
+				block->copyTo(*this);
 			} else {
 				flags |= VMANIP_BLOCK_DATA_INEXIST;