opensm/complib/cl_ptr_vector.c: fix bug/compiler warning

Hi Sasha,

Fixing a bug in cl_ptr_vector_find_from_end(), discovered by compiler's warning:

cl_ptr_vector.c: In function 'cl_ptr_vector_find_from_end':
cl_ptr_vector.c:305: warning: operation on 'i' may be undefined

---
 opensm/complib/cl_ptr_vector.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

index 8ccb9f0..36db4db 100644
@@ -302,7 +302,8 @@ size_t cl_ptr_vector_find_from_end(IN const cl_ptr_vector_t * const p_vector,
 
 	while (i) {
 		/* Invoke the callback for the current element. */
-		if (pfn_callback(i, (void *)p_vector->p_ptr_array[--i],
+		i--;
+		if (pfn_callback(i, (void *)p_vector->p_ptr_array[i],
 				 (void *)context) == CL_SUCCESS) {
 			return (i);
 		}

1.5.1.4

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Applied. Thanks.

Sasha
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