suppress invalid filters

Author: gr0uch

lib/helpers.js

@@ -324,8 +324,9 @@ function attachQueries (request) {
     }
 
     // Attach match option.
-    if (parameter.match(isFilter)) {
-      const matches = parameter.match(inBrackets) || []
+    else if (parameter.match(isFilter)) {
+      const matches = parameter.match(inBrackets)
+      if (!matches) continue
       const field = inflect(matches[1])
       const filterType = matches[2]