Fixed empty lines in readline()

Makefile

@@ -1,6 +1,6 @@
 all: sxiv
 
-VERSION=git-20110214
+VERSION=git-20110215
 
 CC?=gcc
 PREFIX?=/usr/local

main.c

@@ -91,7 +91,7 @@ int main(int argc, char **argv) {
 
 	if (options->from_stdin) {
 		while ((filename = readline(stdin))) {
-			if (!check_append(filename))
+			if (!*filename || !check_append(filename))
 				free((void*) filename);
 		}
 	} else {

util.c

@@ -102,11 +102,11 @@ char* readline(FILE *stream) {
 		}
 	} while (!end && !feof(stream) && !ferror(stream));
 
-	if (!ferror(stream) && *buf) {
+	if (ferror(stream)) {
+		s = NULL;
+	} else {
 		s = (char*) s_malloc((strlen(buf) + 1) * sizeof(char));
 		strcpy(s, buf);
-	} else {
-		s = NULL;
 	}
 
 	free(buf);