Fixed KT-5315 J2K: Generate local var when parameter is being assigned

#KT-5315 Fixed

j2k/tests/testData/ast/function/parameterModification.java

@@ -0,0 +1,6 @@
+//method
+int foo(int p1, int p2, int p3) {
+    p1++;
+    if (p2 > 0) p3 = 0;
+    return p1 + p2 + p3;
+}