Fix compiler warnings with gcc-9.1

Signed-off-by: Allan McRae <allan@archlinux.org>

src/pacman/callback.c

@@ -804,7 +804,7 @@ void cb_dl_progress(const char *filename, off_t file_xfered, off_t file_total)
 		int i = filenamelen - 3;
 		wchar_t *wcp = wcfname;
 		/* grab the max number of char columns we can fill */
-		while(i > 0 && wcwidth(*wcp) < i) {
+		while(wcwidth(*wcp) < i) {
 			i -= wcwidth(*wcp);
 			wcp++;
 		}

src/pacman/pacman.c

@@ -1079,7 +1079,7 @@ static void cl_to_log(int argc, char *argv[])
 		return;
 	}
 	char *p = cl_text;
-	for(i = 0; i < argc - 1; i++) {
+	for(i = 0; i + 1 < argc; i++) {
 		strcpy(p, argv[i]);
 		p += strlen(argv[i]);
 		*p++ = ' ';

src/pacman/query.c

@@ -189,7 +189,7 @@ static int query_fileowner(alpm_list_t *targets)
 
 		if(!lrealpath(filename, rpath)) {
 			/* Can't canonicalize path, try to proceed anyway */
-			strncpy(rpath, filename, PATH_MAX);
+			strcpy(rpath, filename);
 		}
 
 		if(strncmp(rpath, root, rootlen) != 0) {