[gcc r16-6212] libstdc++: Restore braces around body of if-statement

[Jonathan Wakely]

https://gcc.gnu.org/g:cf8dea631d490801b6aa8af0d5d796eba5366434

commit r16-6212-gcf8dea631d490801b6aa8af0d5d796eba5366434
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Dec 17 09:55:20 2025 +0000

    libstdc++: Restore braces around body of if-statement
    
    libstdc++-v3/ChangeLog:
    
            * include/bits/random.tcc [_GLIBCXX_USE_OLD_GENERATE_CANONICAL]
            (generate_canonical): Restore braces around statement.

Diff:
---
 libstdc++-v3/include/bits/random.tcc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libstdc++-v3/include/bits/random.tcc b/libstdc++-v3/include/bits/random.tcc
index 053307519b4b..c3b4776d3580 100644
--- a/libstdc++-v3/include/bits/random.tcc
+++ b/libstdc++-v3/include/bits/random.tcc
@@ -3733,12 +3733,14 @@ namespace __detail
 	}
       __ret = __sum / __tmp;
       if (__builtin_expect(__ret >= _RealType(1), 0))
+	{
 # if _GLIBCXX_USE_C99_MATH_FUNCS
 	  __ret = std::nextafter(_RealType(1), _RealType(0));
 # else
 	  __ret = _RealType(1)
 	    - std::numeric_limits<_RealType>::epsilon() / _RealType(2);
 # endif
+	}
       return __ret;
     }