mesa: modified _mesa_align_free() to accept NULL pointer

So that it acts like ordinary free().  This lets us remove a bunch of
if statements where the function is called.

v2:
- Avoiding compile error on MSVC and possible warnings on other compilers.
- Added comment regards passing NULL pointer being safe.

Reviewed-by: Brian Paul <[email protected]>

1 files changed, 5 insertions, 8 deletions

diff --git a/src/mesa/math/m_matrix.c b/src/mesa/math/m_matrix.c
index 290231527d5..274f969d2e4 100644
--- a/src/mesa/math/m_matrix.c
+++ b/src/mesa/math/m_matrix.c
@@ -1488,14 +1488,11 @@ _math_matrix_ctr( GLmatrix *m )
 void
 _math_matrix_dtr( GLmatrix *m )
 {
-   if (m->m) {
-      _mesa_align_free( m->m );
-      m->m = NULL;
-   }
-   if (m->inv) {
-      _mesa_align_free( m->inv );
-      m->inv = NULL;
-   }
+   _mesa_align_free( m->m );
+   m->m = NULL;
+
+   _mesa_align_free( m->inv );
+   m->inv = NULL;
 }
 
 /*@}*/