typo.

This commit was SVN r13510.

ompi/class/ompi_pointer_array.c

@@ -313,7 +313,7 @@ static bool grow_table(ompi_pointer_array_t *table, size_t soft, size_t hard)
         return false;
     }
     
-    /* We've already established (above) that the arithimetic
+    /* We've already established (above) that the arithmetic
        below will be less than OMPI_FORTRAN_HANDLE_MAX */
     
     new_size_int = (int) new_size;