Cleanup some compiler warnings when doing an optimized/non-debug build.

This commit was SVN r26236.

ompi/class/ompi_free_list.c

@@ -170,7 +170,7 @@ int ompi_free_list_init_ex_new(
 
 int ompi_free_list_grow(ompi_free_list_t* flist, size_t num_elements)
 {
-    unsigned char *ptr, *mpool_alloc_ptr = NULL, *payload_ptr;
+    unsigned char *ptr, *mpool_alloc_ptr = NULL, *payload_ptr = NULL;
     ompi_free_list_memory_t *alloc_ptr;
     size_t i, alloc_size, head_size, elem_size = 0;
     mca_mpool_base_registration_t *reg = NULL;

opal/runtime/opal_params.c

@@ -41,7 +41,9 @@
 int opal_register_params(void)
 {
     int ret;
+#if OPAL_ENABLE_DEBUG
     int value;
+#endif /* OPAL_ENABLE_DEBUG */
 
     /*
      * This string is going to be used in opal/util/stacktrace.c

orte/util/nidmap.c

@@ -647,7 +647,7 @@ int orte_util_decode_pidmap(opal_byte_object_t *bo)
     orte_jobid_t jobid;
     orte_vpid_t i, num_procs;
     orte_pmap_t *pmap;
-    int32_t *nodes=NULL, my_node;
+    int32_t *nodes=NULL, my_node = 0;
     orte_local_rank_t *local_rank=NULL;
     orte_node_rank_t *node_rank=NULL;
 #if OPAL_HAVE_HWLOC