Fix formatting: remove trailing spaces, #endif with comments (> 10 lines)
diff --git a/library/asn1write.c b/library/asn1write.c
index 314c9f9..b6294bb 100644
--- a/library/asn1write.c
+++ b/library/asn1write.c
@@ -363,4 +363,4 @@
 
     return( cur );
 }
-#endif
+#endif /* POLARSSL_ASN1_WRITE_C */