Fix building with gcc 4.5

http://bugs.gentoo.org/show_bug.cgi?id=320107

--- src/scancache.cxx
+++ src/scancache.cxx
@@ -37,7 +37,7 @@
 }
 
 ScanCache::ScanCache(long int elements, long int expire):
-    ExpireLRUCache<ino_t, CachedResult>::ExpireLRUCache<ino_t, CachedResult>(elements, expire) {
+    ExpireLRUCache<ino_t, CachedResult>(elements, expire) {
 }
 
 ScanCache::~ScanCache() {