Fix clang warning: 'csize' not initialized.

Initialize the keyValueMap directly from s instead.

Author: Zannick

src/veil/lru_cache.h

@@ -45,7 +45,7 @@ class SimpleLRUCache
     CCriticalSection cs_mycache;
 
 public:
-    SimpleLRUCache(int s) : csize(s < 1 ? 10 : s), keyValuesMap(csize) {}
+    SimpleLRUCache(int s) : csize(s < 1 ? 10 : s), keyValuesMap(s < 1 ? 10 : s) {}
 
     void set(const K key, const V value) {
         LOCK(cs_mycache);