This commit fixes trac:729. Initialize pointer to registration to NULL. Otherwise

it may contain garbage and we will try to unregister it later in btl_free().

This commit was SVN r13054.

The following Trac tickets were found above:
  Ticket 729 --> https://svn.open-mpi.org/trac/ompi/ticket/729

ompi/mca/btl/gm/btl_gm_frag.c

@@ -48,7 +48,8 @@ static void mca_btl_gm_frag_max_constructor(mca_btl_gm_frag_t* frag)
 static void mca_btl_gm_frag_user_constructor(mca_btl_gm_frag_t* frag) 
 { 
     frag->hdr = NULL;
-    frag->size = 0; 
+    frag->size = 0;
+    frag->registration = NULL;
     MCA_BTL_GM_FRAG_COMMON_CONSTRUCTOR(frag);
 }
 

ompi/mca/btl/mvapi/btl_mvapi_frag.c

@@ -113,6 +113,7 @@ static void mca_btl_mvapi_send_frag_frag_constructor(mca_btl_mvapi_frag_t* frag)
     
     frag->size = 0; 
     frag->type = MCA_BTL_MVAPI_FRAG_FRAG;
+    frag->registration = NULL;
     mca_btl_mvapi_send_frag_common_constructor(frag); 
 }
 

ompi/mca/btl/openib/btl_openib_frag.c

@@ -110,6 +110,7 @@ static void mca_btl_openib_send_frag_frag_constructor(mca_btl_openib_frag_t* fra
 { 
     frag->size = 0; 
     frag->type = MCA_BTL_OPENIB_FRAG_FRAG;
+    frag->registration = NULL;
     mca_btl_openib_send_frag_common_constructor(frag); 
 }
 

ompi/mca/btl/template/btl_template_frag.c

@@ -28,6 +28,7 @@ static void mca_btl_template_frag_max_constructor(mca_btl_template_frag_t* frag)
 static void mca_btl_template_frag_user_constructor(mca_btl_template_frag_t* frag) 
 { 
     frag->size = 0; 
+    frag->registration = NULL;
     mca_btl_template_frag_common_constructor(frag); 
 }
 

ompi/mca/btl/udapl/btl_udapl_frag.c

@@ -69,7 +69,8 @@ static void mca_btl_udapl_frag_user_constructor(mca_btl_udapl_frag_t* frag)
     frag->segment.seg_len = 0;
     frag->segment.seg_addr.pval = NULL;
     frag->ftr = NULL;
-    frag->size = 0; 
+    frag->size = 0;
+    frag->registration = NULL;
 }
 
 static void mca_btl_udapl_frag_common_destructor(mca_btl_udapl_frag_t* frag)