working while, non-working do/while

idea/testData/codegen/doWhile.jet

@@ -0,0 +1,9 @@
+fun fac(i: Int): Int {
+    var count = 1;
+    var result = 1;
+    do {
+        count = count + 1;
+        result = result * count;
+    } while(count != i);
+    return result;
+}

idea/testData/codegen/while.jet

@@ -0,0 +1,9 @@
+fun fac(i: Int): Int {
+    var count = 1;
+    var result = 1;
+    while(count < i) {
+        count = count + 1;
+        result = result * count;
+    }
+    return result;
+}