[committed] libstdc++: Add missing space after effective-target name in test

[Jonathan Wakely via Gcc-patches]

I only noticed this when sending the mail for he previous commit.

Tested x86_64-linux and pushed to trunk.

-- >8 --

libstdc++-v3/ChangeLog:

        * testsuite/17_intro/names_pstl.cc: Add space after effective
        target name.
---
 libstdc++-v3/testsuite/17_intro/names_pstl.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/testsuite/17_intro/names_pstl.cc 
b/libstdc++-v3/testsuite/17_intro/names_pstl.cc
index e5f3ca91aa2..42ce098550c 100644
--- a/libstdc++-v3/testsuite/17_intro/names_pstl.cc
+++ b/libstdc++-v3/testsuite/17_intro/names_pstl.cc
@@ -1,5 +1,5 @@
 // { dg-do compile { target c++17 } }
-// { dg-additional-options "-DTBB_SUPPRESS_DEPRECATED_MESSAGES=1" { target 
tbb_backend} }
+// { dg-additional-options "-DTBB_SUPPRESS_DEPRECATED_MESSAGES=1" { target 
tbb_backend } }
 
 // The TBB headers use non-reserved names (because they're not part of the
 // implementation) so we need to include them before the macro definitions
-- 
2.39.1