SSZipArchive: Make sure header files ends with a single \n character.

This is common practice silences a commonly used warning: 'Wnewline-eof'

SSZipArchive/SSZipCommon.h

@@ -78,4 +78,4 @@ typedef struct unz_global_info64
     unsigned long size_comment;         /* size of the global comment of the zipfile */
 } unz_global_info64;
 
-#endif
+#endif

SSZipArchive/ZipArchive.h

@@ -17,4 +17,3 @@ FOUNDATION_EXPORT const unsigned char ZipArchiveVersionString[];
 // In this header, you should import all the public headers of your framework using statements like #import <ZipArchive/PublicHeader.h>
 
 #import "SSZipArchive.h"
-