Don't show type hints for destructuring declarations with explicit type

#KT-21833 Fixed

idea/src/org/jetbrains/kotlin/idea/parameterInfo/KotlinInlayParameterHintsProvider.kt

@@ -53,7 +53,7 @@ enum class HintType(desc: String, enabled: Boolean) {
 
         override fun isApplicable(elem: PsiElement): Boolean = (elem is KtProperty && elem.getReturnTypeReference() == null && elem.isLocal) ||
                                                                (elem is KtParameter && elem.isLoopParameter && elem.typeReference == null) ||
-                                                               (elem is KtDestructuringDeclarationEntry)
+                                                               (elem is KtDestructuringDeclarationEntry && elem.getReturnTypeReference() == null)
     },
 
     FUNCTION_HINT("Show function return type hints", false) {

idea/tests/org/jetbrains/kotlin/idea/parameterInfo/InlayTypeHintsTest.kt

@@ -105,4 +105,15 @@ class InlayTypeHintsTest : KotlinLightCodeInsightFixtureTestCase() {
                 }
               }""")
     }
+
+    fun testDestructuring() {
+        HintType.LOCAL_VARIABLE_HINT.option.set(true)
+        check("""fun main(args: Array<String>) {
+                val (a: String, b: String, c: String) = x()
+            }
+
+            fun x() :Triple<String, String,String> {
+                return Triple(<hint text="first:" />"A", <hint text="second:" />"B", <hint text="third:" />"C")
+            }""")
+    }
 }