xrCore/xr_resource: Fixed compilation with GCC.

Author: Kaffeine

src/xrCore/xr_resource.h

@@ -61,25 +61,25 @@ class resptr_core : public C
     typedef resptr_core<T, C> self;
 public:
     // construction
-    resptr_core() { p_ = 0; }
-    resptr_core(T* p, bool add_ref = true) { p_ = p; if (add_ref) _inc(); }
-    resptr_core(const self& rhs) { p_ = rhs.p_; _inc(); }
-    ~resptr_core() { _dec(); }
+    resptr_core() { C::p_ = 0; }
+    resptr_core(T* p, bool add_ref = true) { C::p_ = p; if (add_ref) C::_inc(); }
+    resptr_core(const self& rhs) { C::p_ = rhs.p_; C::_inc(); }
+    ~resptr_core() { C::_dec(); }
 
     // assignment
     self& operator= (const self& rhs) { _set(rhs); return (self&)*this; }
 
     // accessors
-    T& operator*() const { return *p_; }
-    T* operator->() const { return p_; }
+    T& operator*() const { return *C::p_; }
+    T* operator->() const { return C::p_; }
 
     // unspecified bool type
     typedef T* (resptr_core::*unspecified_bool_type) () const;
-    operator unspecified_bool_type () const { return p_ == 0 ? 0 : &resptr_core::_get; }
-    bool operator! () const { return p_ == 0; }
+    operator unspecified_bool_type () const { return C::p_ == 0 ? 0 : &resptr_core::_get; }
+    bool operator! () const { return C::p_ == 0; }
 
     // fast swapping
-    void swap(self& rhs) { T* tmp = p_; p_ = rhs.p_; rhs.p_ = tmp; }
+    void swap(self& rhs) { T* tmp = C::p_; C::p_ = rhs.p_; rhs.p_ = tmp; }
 };
 
 // res_ptr == res_ptr