Fix bug in thumbnail generation when used with 'feh .'

It used to save the thumbnail for /path/to/./pmage.png, now it is always
/path/to/image.png

ChangeLog

+git HEAD
+
+    * Fix freedesktop.org Thumbnail Managing Standard implementation:
+      when running feh on the current working directory, '/path/to/./image.png'
+      was used for thumbnail name generation. Now it is always
+      '/path/to/image.png'
+
 Tue, 28 Aug 2012 11:46:19 +0200  Daniel Friesel <derf+feh@finalrewind.org>
 
 * Release v2.6

src/thumbnail.c

@@ -596,6 +596,9 @@ char *feh_thumbnail_get_name_uri(char *name)
 		/* FIXME: add support for ~, need to investigate if it's expanded
 		   somewhere else before adding (unecessary) code */
 		if (name[0] != '/') {
+			/* work around /some/path/./image.ext */
+			if ((strncmp(name, "./", 2)) == 0)
+				name += 2;
 			cwd = getcwd(NULL, 0);
 			uri = estrjoin("/", "file:/", cwd, name, NULL);
 			free(cwd);