Explictly check that an association is a hasMany before trying to pair it in has…

…Many. Inspired by #2159

lib/associations/has-many.js

@@ -86,7 +86,7 @@ module.exports = (function() {
      */
      */
     if (this.through) {
     if (this.through) {
       _.each(this.target.associations, function(association, accessor) {
       _.each(this.target.associations, function(association, accessor) {
-        if (self.source === association.target) {
+        if (self.source === association.target && association.associationType === 'HasMany') {
           var paired;
           var paired;
 
 
           // If through is default, we determine pairing by the accesor value (i.e. DAOFactory's using as won't pair, but regular ones will)
           // If through is default, we determine pairing by the accesor value (i.e. DAOFactory's using as won't pair, but regular ones will)