Run pgindent on generic_xlog.c.

This code desperately needs some micro-optimization, and I'd like it
to be formatted a bit more nicely while I work on it.

src/backend/access/transam/generic_xlog.c

@@ -171,14 +171,15 @@ writeDelta(PageData *pageData)
 					  BLCKSZ - fragmentBegin,
 					  page + fragmentBegin);
 
-#ifdef WAL_DEBUG
 	/*
 	 * If xlog debug is enabled, then check produced delta.  Result of delta
 	 * application to saved image should be the same as current page state.
 	 */
+#ifdef WAL_DEBUG
 	if (XLOG_DEBUG)
 	{
 		char		tmp[BLCKSZ];
+
 		memcpy(tmp, image, BLCKSZ);
 		applyPageRedo(tmp, pageData->data, pageData->dataLen);
 		if (memcmp(tmp, page, pageLower)
@@ -218,6 +219,7 @@ GenericXLogRegister(GenericXLogState *state, Buffer buffer, bool isNew)
 	for (block_id = 0; block_id < MAX_GENERIC_XLOG_PAGES; block_id++)
 	{
 		PageData   *page = &state->pages[block_id];
+
 		if (BufferIsInvalid(page->buffer))
 		{
 			page->buffer = buffer;
@@ -225,7 +227,7 @@ GenericXLogRegister(GenericXLogState *state, Buffer buffer, bool isNew)
 											  BGP_NO_SNAPSHOT_TEST), BLCKSZ);
 			page->dataLen = 0;
 			page->fullImage = isNew;
-			return (Page)page->image;
+			return (Page) page->image;
 		}
 		else if (page->buffer == buffer)
 		{
@@ -233,7 +235,7 @@ GenericXLogRegister(GenericXLogState *state, Buffer buffer, bool isNew)
 			 * Buffer is already registered.  Just return the image, which is
 			 * already prepared.
 			 */
-			return (Page)page->image;
+			return (Page) page->image;
 		}
 	}
 
@@ -372,7 +374,8 @@ GenericXLogAbort(GenericXLogState *state)
 static void
 applyPageRedo(Page page, Pointer data, Size dataSize)
 {
-	Pointer ptr = data, end = data + dataSize;
+	Pointer		ptr = data,
+				end = data + dataSize;
 
 	while (ptr < end)
 	{