Coverity: Resource leak

Fix some resource leak.

src/backend/cdb/cdbcopy.c

@@ -616,6 +616,8 @@ cdbCopyEndInternal(CdbCopy *c, char *abort_msg,
 						break;
 					}
 				}
+				if (buffer)
+					PQfreemem(buffer);
 			}
 
 			/* in SREH mode, check if this seg rejected (how many) rows */

src/bin/pg_dump/pg_dump.c

@@ -4891,6 +4891,7 @@ getTypeStorageOptions(Archive *fout, int *numTypes)
 	{
 		numTypes = 0;
 		tstorageoptions = (TypeStorageOptions *) pg_malloc(0);
+		destroyPQExpBuffer(query);
 		return tstorageoptions;
 	}