Fixed bug: do not lose all candidates when updating status

to success

compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/CallResolver.java

@@ -406,7 +406,7 @@ public class CallResolver {
         candidateResolver.completeTypeInferenceForAllCandidates(context, results);
 
         if (resolvedCall.getStatus().isSuccess()) {
-            return OverloadResolutionResultsImpl.success(resolvedCall);
+            return results.changeStatusToSuccess();
         }
         return results;
     }

compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/results/OverloadResolutionResultsImpl.java

@@ -140,4 +140,15 @@ public class OverloadResolutionResultsImpl<D extends CallableDescriptor> impleme
     public Collection<ResolvedCall<D>> getAllCandidates() {
         return allCandidates;
     }
+
+    public OverloadResolutionResultsImpl<D> changeStatusToSuccess() {
+        if (getResultCode() == Code.SUCCESS) return this;
+
+        assert isSingleResult() && getResultCode() == Code.INCOMPLETE_TYPE_INFERENCE :
+                "Only incomplete type inference status with one candidate can be changed to success: " +
+                getResultCode() + "\n" + getResultingCalls();
+        OverloadResolutionResultsImpl<D> newResults = new OverloadResolutionResultsImpl<D>(Code.SUCCESS, getResultingCalls());
+        newResults.setAllCandidates(getAllCandidates());
+        return newResults;
+    }
 }