Fix incorrect usage of platform specific function

src/string.cpp

@@ -567,7 +567,7 @@ bool istring::operator!=(const string_view& rhs) const {
 }
 
 size_t istring::copy(char* dest, size_t count, size_t pos) const {
-	mtl_hybridcpy(dest, m_str + pos, count);
+	mtl::memcpy(dest, m_str + pos, count);
 	return count;
 }
 

src/string_view.cpp

@@ -14,7 +14,7 @@ size_t string_view::copy(char* dest, size_t count, size_t pos) const {
 		count = m_size - pos;
 	}
 
-	mtl_hybridcpy(dest, m_str + pos, count);
+	mtl::memcpy(dest, m_str + pos, count);
 	return count;
 }