fixup! Allow trailing spaces in code blocks

lib/md009.js

@@ -34,7 +34,7 @@ module.exports = {
     forEachLine(lineMetadata(), (line, lineIndex, inCode, onFence) => {
       inFencedCode += onFence;
       const lineNumber = lineIndex + 1;
-      if ((!inCode || inFencedCode !== 0) && trailingSpaceRe.test(line) &&
+      if ((!inCode || inFencedCode) && trailingSpaceRe.test(line) &&
         !includesSorted(listItemLineNumbers, lineNumber)) {
         const actual = line.length - line.trimRight().length;
         if (expected !== actual) {

test/code_block_fenced.md

@@ -12,7 +12,7 @@ This is a code block that won't trigger.
 ```text
 This is code
  
-with an empty line.
+with a line with trailing spaces. {MD009:14}
 ```
 
 But we'll do another:
@@ -21,4 +21,3 @@ But we'll do another:
     will.
 
 Final text is here
-{MD009:14}

test/trailing_spaces_br.md

@@ -1,6 +1,6 @@
 This line has a single trailing space {MD009} 
 This line has two trailing spaces and should be allowed  
 This line has three trailing spaces {MD009}   
- 
-{MD009:4}
 This line has four trailing spaces {MD009}    
+ 
+{MD009:5}