Fix incorrect use of enum that was leading to crashes on source connect for

unknown mimetype.

svn path=/trunk/icecast/; revision=4344

src/connection.c

@@ -313,7 +313,7 @@ int connection_create_source(client_t *client, connection_t *con, http_parser_t
 
 	if (contenttype != NULL) {
 		format_type_t format = format_get_type(contenttype);
-		if (format < 0) {
+		if (format == FORMAT_ERROR) {
 			WARN1("Content-type \"%s\" not supported, dropping source", contenttype);
             goto fail;
 		} else {

src/format.c

@@ -36,7 +36,7 @@ format_type_t format_get_type(char *contenttype)
     else if(strcmp(contenttype, "audio/mpeg") == 0)
         return FORMAT_TYPE_MP3; 
     else
-        return -1;
+        return FORMAT_ERROR;
 }
 
 char *format_get_mimetype(format_type_t type)

src/format.h

@@ -14,7 +14,8 @@ struct source_tag;
 typedef enum _format_type_tag
 {
 	FORMAT_TYPE_VORBIS,
-	FORMAT_TYPE_MP3
+	FORMAT_TYPE_MP3,
+    FORMAT_ERROR /* No format, source not processable */
 } format_type_t;
 
 typedef struct _format_plugin_tag