[glibmm/glibmm-2-64] gmmproc: _CLASS_BOXEDTYPE, _CLASS_OPAQUE_COPYABLE: Fix move assignment

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 08a3cb6e3de39460c1f0fe2fd3c7aec69a198d87
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Sat Jul 11 11:39:40 2020 +0200

    gmmproc: _CLASS_BOXEDTYPE, _CLASS_OPAQUE_COPYABLE: Fix move assignment
    
    Add a std::move() to avoid copying.
    Fixes #76

 tools/m4/class_boxedtype.m4       | 2 +-
 tools/m4/class_opaque_copyable.m4 | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/tools/m4/class_boxedtype.m4 b/tools/m4/class_boxedtype.m4
index a31f1f0a..4c2092b9 100644
--- a/tools/m4/class_boxedtype.m4
+++ b/tools/m4/class_boxedtype.m4
@@ -146,7 +146,7 @@ __CPPNAME__::__CPPNAME__`'(__CPPNAME__&& other) noexcept
 
 __CPPNAME__& __CPPNAME__::operator=(__CPPNAME__`'&& other) noexcept
 {
-  __CPPNAME__ temp (other);
+  __CPPNAME__ temp (std::move(other));
   swap(temp);
   return *this;
 }
diff --git a/tools/m4/class_opaque_copyable.m4 b/tools/m4/class_opaque_copyable.m4
index c725a42a..323f10d5 100644
--- a/tools/m4/class_opaque_copyable.m4
+++ b/tools/m4/class_opaque_copyable.m4
@@ -155,7 +155,7 @@ __CPPNAME__::__CPPNAME__`'(__CPPNAME__&& other) noexcept
 
 __CPPNAME__& __CPPNAME__::operator=(__CPPNAME__`'&& other) noexcept
 {
-  __CPPNAME__ temp (other);
+  __CPPNAME__ temp (std::move(other));
   swap(temp);
   return *this;
 }