fake wormhole in test had negative size

.editorconfig

@@ -15,6 +15,7 @@ indent_size = 4
 
 [*.{xml,json}]
 charset = utf-8
+indent_size = 2
 
 # Tab indentation (no size specified)
 [Makefile]

src/wormhole.test.c

@@ -37,6 +37,8 @@ static void test_make_wormholes(CuTest *tc) {
     test_setup();
     setup_wormholes();
     btype = test_create_buildingtype("wormhole");
+    btype->maxsize = 4;
+    btype->maxcapacity = 4;
     match[0] = r1 = test_create_plain(0, 0);
     match[1] = r2 = test_create_plain(1, 0);
     make_wormholes(match, 2, btype);