Fix cpplint's whitespace warnings.

Change-Id: I16b69d773e59b49e8e30227b5aa5cb1959a8930f
diff --git a/src/image_writer.h b/src/image_writer.h
index cdf2d9c..35486b0 100644
--- a/src/image_writer.h
+++ b/src/image_writer.h
@@ -19,12 +19,11 @@
 
 // Write a Space built during compilation for use during execution.
 class ImageWriter {
-
  public:
-  ImageWriter() : source_space_(NULL), image_top_(0), image_base_(NULL) {};
+  ImageWriter() : source_space_(NULL), image_top_(0), image_base_(NULL) {}
   bool Write(const char* image_filename, uintptr_t image_base,
              const std::string& oat_filename, const std::string& strip_location_prefix);
-  ~ImageWriter() {};
+  ~ImageWriter() {}
 
  private: