fortran: Change the line order of #pragma

No code change.
These lines were introduced in my recent commit 17d32ac.
I had a editing mistake and the order is different from
other lines/files.

(cherry picked from commit open-mpi/ompi@e854404)

Author: kawashima-fj

ompi/mpi/fortran/mpif-h/alloc_mem_f.c

@@ -65,14 +65,14 @@ OMPI_GENERATE_F77_BINDINGS (PMPI_ALLOC_MEM_CPTR,
 #pragma weak mpi_alloc_mem_ = ompi_alloc_mem_f
 #pragma weak mpi_alloc_mem__ = ompi_alloc_mem_f
 
+#pragma weak MPI_Alloc_mem_f = ompi_alloc_mem_f
+#pragma weak MPI_Alloc_mem_f08 = ompi_alloc_mem_f
+
 #pragma weak MPI_ALLOC_MEM_CPTR = ompi_alloc_mem_f
 #pragma weak mpi_alloc_mem_cptr = ompi_alloc_mem_f
 #pragma weak mpi_alloc_mem_cptr_ = ompi_alloc_mem_f
 #pragma weak mpi_alloc_mem_cptr__ = ompi_alloc_mem_f
 
-#pragma weak MPI_Alloc_mem_f = ompi_alloc_mem_f
-#pragma weak MPI_Alloc_mem_f08 = ompi_alloc_mem_f
-
 #pragma weak MPI_Alloc_mem_cptr_f = ompi_alloc_mem_f
 #pragma weak MPI_Alloc_mem_cptr_f08 = ompi_alloc_mem_f
 #else