Cleanup minor memory leak

This commit was SVN r27736.

ompi/runtime/ompi_module_exchange.c

@@ -82,7 +82,10 @@ ompi_modex_recv(const mca_base_component_t *component,
         *buffer = (void*)boptr->bytes;
         *size = boptr->size;
     }
-
+    /* we no longer require the struct itself since all we
+     * wanted was the data inside it
+     */
+    free(boptr);
     free(key);
     return rc;
 }
@@ -146,7 +149,10 @@ ompi_modex_recv_string(const char* key,
         *buffer = boptr->bytes;
         *size = boptr->size;
     }
-
+    /* we no longer require the struct itself since all we
+     * wanted was the data inside it
+     */
+    free(boptr);
     return rc;
 }