Incorrect size of `.tbss_space` if `.tbss` has an explicit output section address and memory region

.tbss_space has incorrect size when .tbss output section has an explicit address and memory region.

Reproducer:

#!/usr/bin/env bash

cat > script.t << '!'
MEMORY {
  RAM : ORIGIN = 0x1000, LENGTH = 0x3000
}

SECTIONS {
  .text : { *(.text*) *(*text*) } >RAM
  .tdata : { *(.tdata*) } >RAM
  .tbss (0x2014) (NOLOAD) : {
    *(.tbss*)
  } >RAM
  .tbss_space (NOLOAD) :{
    . = ADDR(.tbss);
    . = . + SIZEOF(.tbss);
  } >RAM
}
!

cat > 1.c << '!'
_Thread_local int u;

_Thread_local int v = 1;

int foo() { return u; }

int bar() { return v; }
!

LDs=(ld.eld)
SFs=(eld)

clang -o 1.o --target=riscv64-unknown-elf -c 1.c -ffunction-sections -fdata-sections

for i in "${!SFs[@]}"; do
  ${LDs[$i]} -o 1.${SFs[$i]}.out 1.o -T script.t -Map 1.${SFs[$i]}.map.txt 
done
llvm-readelf -S 1.eld.out | grep .tbss_space
#  [ 4] .tbss_space       NOBITS          000000000000103c 00103c 000fdc 00  WA  0   0  1
#
# Expected size is 4.