Fix empty line in block with EmptyStatement (#1375)

* Fix empty line in block with EmptyStatement

* Update code per review

src/printer.js

@@ -3428,7 +3428,7 @@ function isFirstStatement(path) {
 function isLastStatement(path) {
   const parent = path.getParentNode();
   const node = path.getValue();
-  const body = parent.body;
+  const body = parent.body.filter(stmt => stmt.type !== "EmptyStatement");
   return body && body[body.length - 1] === node;
 }
 

tests/empty_statement/__snapshots__/jsfmt.spec.js.snap

@@ -21,3 +21,17 @@ do;
 while (1);
 
 `;
+
+exports[`no-newline.js 1`] = `
+if (a) {
+  b;
+
+
+  ;
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+if (a) {
+  b;
+}
+
+`;

tests/empty_statement/no-newline.js

@@ -0,0 +1,6 @@
+if (a) {
+  b;
+
+
+  ;
+}