Fix inconsistent configure-time check

Signed-off-by: Sergey Kosukhin <[email protected]>

Author: skosukhin

config/ompi_fortran_check_ignore_tkr.m4

@@ -141,7 +141,7 @@ AC_DEFUN([OMPI_FORTRAN_CHECK_IGNORE_TKR_SUB], [
      end subroutine force_assumed_shape
   end interface
 
-  interface
+  interface foo
      subroutine foo(buffer, count)
        $1 buffer
        $2, intent(in) :: buffer