Remove double -gray in get_disto Help()

Change-Id: Ib973b7ebf8518fed30055e7e289e0203f12c46c1
Reviewed-on: https://chromium-review.googlesource.com/c/codecs/libwebp2/+/3599254
Tested-by: WebM Builds <builds@webmproject.org>
Reviewed-by: Maryla Ustarroz-Calonge <maryla@google.com>
diff --git a/examples/get_disto.cc b/examples/get_disto.cc
index 60d0c04..08d44e9 100644
--- a/examples/get_disto.cc
+++ b/examples/get_disto.cc
@@ -87,7 +87,6 @@
   opt.Add("-crop <x> <y> <w> <h>",
           "Crop picture with given rectangle. Alternatively, one can use "
           "-crop_source to only crop the reference file (second argument).");
-  opt.Add("-gray", "use grayscale for difference map (-scale)");
   opt.Add("-ref <string>", "specify reference file for bpp calculation");
   opt.Add("-prefix <string>", "add a prefix label");
   opt.Add("-suffix <string>", "add a suffix label");
diff --git a/src/common/header_enc_dec.cc b/src/common/header_enc_dec.cc
index d190965..aaf33ff 100644
--- a/src/common/header_enc_dec.cc
+++ b/src/common/header_enc_dec.cc
@@ -96,7 +96,7 @@
 }
 
 uint32_t BitUnpacker::ReadVarUInt(uint32_t min_value, uint32_t max_value,
-                                WP2_OPT_LABEL) {
+                                  WP2_OPT_LABEL) {
   assert(min_value <= max_value);
   if (status_ != WP2_STATUS_OK) return 0;
   if (min_value == max_value) {
@@ -114,7 +114,7 @@
 }
 
 Rectangle BitUnpacker::ReadRect(uint32_t canvas_width, uint32_t canvas_height,
-                              WP2_OPT_LABEL) {
+                                WP2_OPT_LABEL) {
   assert(canvas_width > 0 && canvas_height > 0);
   // Read reversed width and height first, as these tend to be near 'canvas_*'.
   Rectangle rect;