Fixed KNPE in convert primary constructor to secondary #KT-14745 Fixed

idea/testData/intentions/convertPrimaryConstructorToSecondary/noArgType.kt

@@ -0,0 +1,4 @@
+// SKIP_ERRORS_BEFORE
+// SKIP_ERRORS_AFTER
+
+class My<caret>(val x)

idea/testData/intentions/convertPrimaryConstructorToSecondary/noArgType.kt.after

@@ -0,0 +1,10 @@
+// SKIP_ERRORS_BEFORE
+// SKIP_ERRORS_AFTER
+
+class My {
+    val x
+
+    constructor(x:) {
+        this.x = x
+    }
+}