Reverted unnecessary changes.

src/ngx_http_lua_headers.c

@@ -574,27 +574,21 @@ ngx_http_lua_ngx_req_header_clear(lua_State *L)
 {
     ngx_uint_t n;
     n = lua_gettop(L);
-    if ((n != 1) && (n != 2)) {
-        return luaL_error(L, "expecting one or two arguments, but seen %d",
+    if (lua_gettop(L) != 1) {
+        return luaL_error(L, "expecting one arguments, but seen %d",
                           lua_gettop(L));
     }
 
-    if (n == 2) {
-        lua_pushnil(L);
-        /* Top element is now 3, replace it with element 3 */
-        lua_insert(L, 2);
-    } else {
-        lua_pushnil(L);
-    }
-
+    lua_pushnil(L);
+
     return ngx_http_lua_ngx_req_header_set_helper(L);
 }
 
 
 static int
 ngx_http_lua_ngx_req_header_set(lua_State *L)
 {
-    if ((lua_gettop(L) != 2) && (lua_gettop(L) != 3)) {
+    if (lua_gettop(L) != 2) {
         return luaL_error(L, "expecting two arguments, but seen %d",
                           lua_gettop(L));
     }
@@ -632,10 +626,9 @@ ngx_http_lua_ngx_req_header_set_helper(lua_State *L)
 
 #if 0
     /* replace "_" with "-" */
-        for (i = 0; i < len; i++) {
-            if (p[i] == '_') {
-                p[i] = '-';
-            }
+    for (i = 0; i < len; i++) {
+        if (p[i] == '_') {
+            p[i] = '-';
         }
     }
 #endif