Allow the personalize function to be used only to set the flags. If the

position pointer is NULL, then the function will not try to set the convertor
position.

This commit was SVN r10436.

ompi/datatype/convertor.h

@@ -50,7 +50,6 @@ extern "C" {
 #define CONVERTOR_STATE_COMPLETE   0x02000000
 #define CONVERTOR_STATE_ALLOC      0x04000000
 #define CONVERTOR_COMPLETED        0x08000000
-#define CONVERTOR_COMPUTE_CRC      0x10000000
 
 typedef struct ompi_convertor_t ompi_convertor_t;
 
@@ -289,6 +288,8 @@ ompi_convertor_personalize( ompi_convertor_t* convertor, uint32_t flags,
     convertor->memAlloc_fn = allocfn;
     convertor->memAlloc_userdata = userdata;
 
+    if( NULL == position )
+        return OMPI_SUCCESS;
     return ompi_convertor_set_position( convertor, position );
 }