input_stream: input_stream_close() returns void

close() shouldn't fail with read-only streams.

src/input_curl.c

@@ -235,11 +235,10 @@ input_curl_read(struct input_stream *is, void *ptr, size_t size)
 	return nbytes;
 }
 
-static int
+static void
 input_curl_close(struct input_stream *is)
 {
 	input_curl_free(is);
-	return 0;
 }
 
 static int

src/input_file.c

@@ -78,15 +78,10 @@ input_file_read(struct input_stream *is, void *ptr, size_t size)
 	return readSize;
 }
 
-static int
+static void
 input_file_close(struct input_stream *is)
 {
-	if (fclose((FILE *) is->data) < 0) {
-		is->error = errno;
-		return -1;
-	}
-
-	return 0;
+	fclose((FILE *) is->data);
 }
 
 static int

src/input_stream.c

@@ -85,7 +85,7 @@ input_stream_read(struct input_stream *is, void *ptr, size_t size)
 	return is->plugin->read(is, ptr, size);
 }
 
-int input_stream_close(struct input_stream *is)
+void input_stream_close(struct input_stream *is)
 {
 	if (is->mime)
 		free(is->mime);
@@ -94,7 +94,7 @@ int input_stream_close(struct input_stream *is)
 	if (is->meta_title)
 		free(is->meta_title);
 
-	return is->plugin->close(is);
+	is->plugin->close(is);
 }
 
 int input_stream_eof(struct input_stream *is)

src/input_stream.h

@@ -26,7 +26,7 @@ struct input_stream;
 
 struct input_plugin {
 	bool (*open)(struct input_stream *is, const char *url);
-	int (*close)(struct input_stream *is);
+	void (*close)(struct input_stream *is);
 
 	int (*buffer)(struct input_stream *is);
 	size_t (*read)(struct input_stream *is, void *ptr, size_t size);
@@ -58,7 +58,7 @@ void input_stream_global_finish(void);
    for the input stream is set */
 int input_stream_open(struct input_stream *is, char *url);
 int input_stream_seek(struct input_stream *is, long offset, int whence);
-int input_stream_close(struct input_stream *is);
+void input_stream_close(struct input_stream *is);
 int input_stream_eof(struct input_stream *is);
 
 /* return value: -1 is error, 1 inidicates stuff was buffered, 0 means nothing