Smart completion: a bit more correct logic for last vararg parameter

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/ExpectedInfos.kt

@@ -208,11 +208,13 @@ class ExpectedInfos(
                 if (isFunctionLiteralArgument) continue
 
                 if (argumentName == null) {
-                    expectedInfos.add(ArgumentExpectedInfo(varargElementType, expectedName?.unpluralize(),
-                                                           if (tail == Tail.RPARENTH) null else tail, descriptor, argumentPosition))
+                    // even if it's the last parameter, there can be more arguments for the same parameter
+                    val varargTail = if (tail == Tail.RPARENTH) null else tail
+
+                    expectedInfos.add(ArgumentExpectedInfo(varargElementType, expectedName?.unpluralize(), varargTail, descriptor, argumentPosition))
 
                     if (argumentIndex == parameters.indexOf(parameter)) {
-                        expectedInfos.add(ArgumentExpectedInfo(parameter.getType(), expectedName, tail, descriptor, argumentPosition, ItemOptions.STAR_PREFIX))
+                        expectedInfos.add(ArgumentExpectedInfo(parameter.getType(), expectedName, varargTail, descriptor, argumentPosition, ItemOptions.STAR_PREFIX))
                     }
                 }
                 else {

idea/idea-completion/testData/handlers/smart/Vararg4.kt.after

@@ -1,7 +1,7 @@
 fun foo(vararg strings: String){ }
 
 fun bar(arr: Array<String>){
-    foo(*arr)<caret>
+    foo(*arr<caret>)
 }
 
 // ELEMENT: arr

idea/idea-completion/testData/handlers/smart/Vararg5.kt.after

@@ -1,7 +1,7 @@
 fun foo(vararg strings: String){ }
 
 fun bar(list: List<String>){
-    foo(*list.toTypedArray())<caret>
+    foo(*list.toTypedArray()<caret>)
 }
 
 // ELEMENT: toTypedArray