Description: fix some GCC warnings.
Author: Adilson dos Reis <adilsondosreis@yahoo.com.br>
Last-Update: 2015-09-01
Index: arc-5.21q/arcadd.c
===================================================================
--- arc-5.21q.orig/arcadd.c
+++ arc-5.21q/arcadd.c
@@ -274,6 +274,8 @@ addfile(path, name, update, fresh)	/* ad
 				printf("  Truncate to %s (y/n)? ", name);
 				fflush(stdout);
 				dummy = fgets(buf, STRLEN, stdin);
+				/* artifice to prevent GCC message: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable] */
+				if (dummy == NULL) {};
 				*buf = toupper(*buf);
 				if (*buf == 'Y' || *buf == 'N')
 					break;

Index: arc-5.21q/arcext.c
===================================================================
--- arc-5.21q.orig/arcext.c
+++ arc-5.21q/arcext.c
@@ -151,6 +151,8 @@ extfile(hdr, path, prt)		/* extract a fi
 					printf("  Overwrite it (y/n)? ");
 					fflush(stdout);
 					dummy = fgets(buf, STRLEN, stdin);
+					/* artifice to prevent GCC message: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable] */
+					if (dummy == NULL) {};
 					*buf = toupper(*buf);
 					if (*buf == 'Y' || *buf == 'N')
 						break;

Index: arc-5.21q/arcio.c
===================================================================
--- arc-5.21q.orig/arcio.c
+++ arc-5.21q/arcio.c
@@ -57,6 +57,8 @@ readhdr(hdr, f)			/* read a header from
 				 * no need to check result
 				 */
 				dummy = ungetc(hdrver = fgetc(f), f);
+				/* artifice to prevent GCC message: warning: variable ‘dummy’ set but not used [-Wunused-but-set-variable] */
+				if (dummy == 0) {};
 				if (!(hdrver & 0x80) && hdrver <= ARCVER)
 					break;
 			}