DeadCode: Format test file

Author: lcartey

c/common/test/rules/deadcode/test.c

@@ -1,6 +1,6 @@
 // NOTICE: THE TEST CASES BELOW ARE ALSO INCLUDED IN THE C++ TEST CASE AND
 // CHANGES SHOULD BE REFLECTED THERE AS WELL.
-#include<stdbool.h>
+#include <stdbool.h>
 
 int may_have_side_effects();
 int no_side_effects(int x) { return 1 + 2; }