Change space indention (#557)

* change space indention

* change space indention

include/n2n_typedefs.h

@@ -678,7 +678,7 @@ struct sn_community {
 typedef struct regex_t* re_t;
 
 struct sn_community_regular_expression {
-  re_t rule;         // compiles regular expression
+    re_t rule;         /* compiles regular expression */
 
     UT_hash_handle hh; /* makes this structure hashable */
 };