Ignore comments in rgb.txt. re #76951

--- giftrans-1.12.2.orig/giftrans.c

+++ giftrans-1.12.2/giftrans.c

@@ -811,10 +813,12 @@

 	image=argv[0];

 	root=NULL;

-	if (*rgb)

+	if (*rgb) {

 		if ((src=fopen(rgb,"r"))!=NULL) {

 			next= &root;

 			while (fgets(line,sizeof(line),src)) {

+				if (line[0] == '!')

+					continue;

 				*next=(struct entry *)malloc(sizeof(struct entry));

 				for (ptr=line;strchr(" \t",*ptr);ptr++);

 				for (nptr=ptr;!strchr(" \t",*ptr);ptr++);

@@ -847,7 +851,7 @@

 			*rgb='\0';

 #endif

 		}

-

+	}

 	bc.index=NONE;

 	tc.index=NONE;

 	tn.index=NONE;