When iterating over the sections in a file, omit sections that have no raw da...

courgette/image_info.h

Index: courgette/image_info.h
===================================================================
--- courgette/image_info.h	(revision 17002)
+++ courgette/image_info.h	(working copy)
@@ -119,7 +119,8 @@
     return start_ + offset;
   }
 
-  // Finds the first section at file_offset or above.
+  // Finds the first section at file_offset or above.  Does not return sections
+  // that have no raw bytes in the file.
   const Section* FindNextSection(uint32 file_offset) const;
   // Returns Section containing the relative virtual address, or NULL if none.
   const Section* RVAToSection(RVA rva) const;