Revert "xrRender/ShaderResourceTraits.h: removed excessive string duplication"

This reverts commit bba8744.

Author: Xottab-DUTY

src/Layers/xrRender/ShaderResourceTraits.h

@@ -394,12 +394,18 @@ inline T* CResourceManager::CreateShader(const char* name, const char* filename
         }
         R_ASSERT3(file, "Shader file doesnt exist:", cname);
 
+        // Duplicate and zero-terminate
+        const auto size = file->length();
+        char* const data = (LPSTR)_alloca(size + 1);
+        CopyMemory(data, file->pointer(), size);
+        data[size] = 0;
+
         // Select target
         LPCSTR c_target = ShaderTypeTraits<T>::GetCompilationTarget();
         LPCSTR c_entry = "main";
 
         if (searchForEntryAndTarget)
-            ShaderTypeTraits<T>::GetCompilationTarget(c_target, c_entry, static_cast<pcstr>(file->pointer()));
+            ShaderTypeTraits<T>::GetCompilationTarget(c_target, c_entry, data);
 
 #ifdef USE_OGL
         DWORD flags = NULL;