Warning during 'git stash push'

What did you do before the bug happened? (Steps to reproduce your issue)
Tried to stash a particular subdirectory

What did you expect to happen? (Expected behavior)
Directory should be stashed, obviously,

What happened instead? (Actual behavior)
  git stash push -- x11-toolkits/fltk
Saved working directory and index state WIP on main: 4c2cc95952a6 
graphics/mesa-devel: update to 21.0.b.4390
<stdin>:83: space before tab in indent.
      LIBS="$LIBS -lX11 $X_EXTRA_LIBS"
<stdin>:84: space before tab in indent.
      CFLAGS="$CFLAGS $X_CFLAGS"
<stdin>:85: space before tab in indent.
      CXXFLAGS="$CXXFLAGS $X_CFLAGS"
<stdin>:88: space before tab in indent.
      DSOFLAGS="$X_LIBS $DSOFLAGS"
<stdin>:89: space before tab in indent.
      $as_echo "#define USE_X11 1" >>confdefs.h
warning: squelched 40 whitespace errors
warning: 45 lines add whitespace errors.


What's different between what you expected and what actually happened?
unexpected warnings

Anything else you want to add:
I did this from w/in of the FreeBSD ports directory, trying to stash 
only my work in one of subdirectories: x11-toolkits/fltk

Please review the rest of the bug report below.
You can delete any lines you don't wish to share.


[System Info]
git version:
git version 2.31.0
cpu: amd64
no commit associated with this build
sizeof-long: 8
sizeof-size_t: 8
shell-path: /bin/sh
uname: FreeBSD 12.2-STABLE FreeBSD 12.2-STABLE #0 r369528M: Mon Mar 29 
05:18:24 PDT 2021 
unknown@nohost.com:/disk-samsung/sys/usr/src/amd64.amd64/sys/GENERIC amd64
compiler info: clang: 10.0.1 (git@github.com:llvm/llvm-project.git 
llvmorg-10.0.1-0-gef32c611aa2)
libc info: no libc information available
$SHELL (typically, interactive shell): /usr/local/bin/bash


[Enabled Hooks]