Fix removing of the first comment in the rule if it's not on separate line

Author: hudochenkov

index.js

@@ -184,6 +184,10 @@ module.exports = postcss.plugin('postcss-sorting', function (opts) {
 
                 rule.each(function (node, index) {
                     if (node.type === 'comment') {
+                        if (index === 0 && node.raws.before.indexOf('\n') === -1) {
+                            processed.push(node);
+                        }
+
                         return;
                     }
 

test/fixtures/first-comment-in-the-rule.css

@@ -0,0 +1,8 @@
+div { /* comment 1*/
+    display: none;
+}
+
+section { /* comment 2 */
+    /* comment 3 */
+    display: block;
+}

test/fixtures/first-comment-in-the-rule.expected.css

@@ -0,0 +1,8 @@
+div { /* comment 1*/
+    display: none;
+}
+
+section { /* comment 2 */
+    /* comment 3 */
+    display: block;
+}

test/test.js

@@ -66,6 +66,10 @@ test('Should not remove comments in rules if they are only children', t => {
     return run(t, 'rules-with-comments-only');
 });
 
+test('Should not remove first comment in the rule if it\'s not on separate line', t => {
+    return run(t, 'first-comment-in-the-rule');
+});
+
 test('Should work correctly with one comment in case of 1 group. SCSS syntax', t => {
     return run(t, 'single-group-comment-scss.scss', { 'sort-order': [
         ['border-bottom', 'font-style']