Turn on style-checking, fix lingering violations

We'd been ignoring updating uncrustify for some time now because I'd
thought these were misclassifications that would require an update in
our rules to address. Turns out they're legit, so I'm checking them in.

.circleci/config.yml

@@ -10,6 +10,12 @@ jobs:
       - checkout
       - {run: {name: 'Configure, Build, and Install', command: build-ext}}
       - {persist_to_workspace: {root: ., paths: [.]}}
+  check-style:
+    docker:
+      - {image: 'citusdata/stylechecker:latest'}
+    steps:
+      - checkout
+      - {run: {name: 'Check Style', command: citus_indent --check}}
   test-10_check-multi:
     docker:
       - {image: 'citusdata/exttester-10:latest'}
@@ -77,6 +83,7 @@ workflows:
   build_and_test:
     jobs:
       - build
+      - check-style
 
       - {test-10_check-multi: {requires: [build]}}
       - {test-10_check-tt-van-mx: {requires: [build]}}

src/backend/distributed/utils/citus_copyfuncs.c

@@ -33,7 +33,7 @@ CitusSetTag(Node *node, int tag)
 
 
 #define DECLARE_FROM_AND_NEW_NODE(nodeTypeName) \
-	nodeTypeName * newnode = (nodeTypeName *) \
+	nodeTypeName *newnode = (nodeTypeName *) \
 							CitusSetTag((Node *) target_node, T_ ## nodeTypeName); \
 	nodeTypeName *from = (nodeTypeName *) source_node