osc/pt2pt: fix typo

Signed-off-by: Nathan Hjelm <hjelmn@me.com>

ompi/mca/osc/pt2pt/osc_pt2pt_frag.h

@@ -173,7 +173,7 @@ static inline int ompi_osc_pt2pt_frag_alloc (ompi_osc_pt2pt_module_t *module, in
     int ret;
 
     do {
-        ret = ompi_osc_pt2pt_frag_alloc (module, target, request_len , buffer, ptr, long_send, buffered);
+        ret = _ompi_osc_pt2pt_frag_alloc (module, target, request_len , buffer, ptr, long_send, buffered);
         if (OPAL_LIKELY(OMPI_SUCCESS == ret || OMPI_ERR_OUT_OF_RESOURCE != ret)) {
             break;
         }