git: b571bcea5495 - main - bsd.subdir.mk: improve `SUBDIR.${MK_FOO}` advice

The branch main has been updated by ngie:

URL: https://cgit.FreeBSD.org/src/commit/?id=b571bcea5495327fd210378109b0b2aed08bebc3

commit b571bcea5495327fd210378109b0b2aed08bebc3
Author:     Enji Cooper <ngie@FreeBSD.org>
AuthorDate: 2024-04-21 16:27:48 +0000
Commit:     Enji Cooper <ngie@FreeBSD.org>
CommitDate: 2024-04-21 16:30:09 +0000

    bsd.subdir.mk: improve `SUBDIR.${MK_FOO}` advice
    
    - Remove superfluous whitespace by removing trailing whitespace
      before `\` (line continuation character)
    - Quote `SUBDIR.` to clarify the fact that this is a variable
      reference--not the end of a sentence.
---
 share/mk/bsd.subdir.mk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/share/mk/bsd.subdir.mk b/share/mk/bsd.subdir.mk
index 95a178c04907..565af41602c0 100644
--- a/share/mk/bsd.subdir.mk
+++ b/share/mk/bsd.subdir.mk
@@ -125,8 +125,8 @@ SUBDIR:=${SUBDIR:u}
 .endif
 
 .if defined(SUBDIR.)
-.error ${.CURDIR}: Found variable SUBDIR. with value "${SUBDIR.}". This was \
-        probably caused by using SUBDIR.$${MK_FOO} without including \
+.error ${.CURDIR}: Found variable 'SUBDIR.' with value "${SUBDIR.}". This was\
+        probably caused by using SUBDIR.$${MK_FOO} without including\
         <src.opts.mk> or by using an invalid $${MK_FOO} option.
 .endif