Work around Xdebug issue where lines that do not exist are marked as being executed

Author: sebastianbergmann

src/CodeCoverage/Driver/Xdebug.php

@@ -106,8 +106,35 @@ private function cleanup(array $data)
             if (isset($data[$file][0])) {
                 unset($data[$file][0]);
             }
+
+            if (file_exists($file)) {
+                $numLines = $this->getNumberOfLinesInFile($file);
+
+                foreach (array_keys($data[$file]) as $line) {
+                    if (isset($data[$file][$line]) && $line > $numLines) {
+                        unset($data[$file][$line]);
+                    }
+                }
+            }
         }
 
         return $data;
     }
+
+    /**
+     * @param  string $file
+     * @return integer
+     * @since Method available since Release 2.0.0
+     */
+    private function getNumberOfLinesInFile($file)
+    {
+        $buffer = file_get_contents($file);
+        $lines  = substr_count($buffer, "\n");
+
+        if (substr($buffer, -1) !== "\n") {
+            $lines++;
+        }
+
+        return $lines;
+    }
 }