libphobos: Fix modify immutable error on Solaris.

Backported from upstream druntime 2.079.

Reviewed-on: https://github.com/dlang/druntime/pull/2089

From-SVN: r266950

diff --git a/libphobos/libdruntime/core/thread.d b/libphobos/libdruntime/core/thread.d
index ff15d066a4968c4c8624eb60612b7b36dd30dfc3..98a81425f472717a8e96aa081638a8428659759b 100644 (file)
--- a/libphobos/libdruntime/core/thread.d
+++ b/libphobos/libdruntime/core/thread.d
@@ -1547,7 +1547,7 @@ private:
 
     version (Solaris)
     {
-        __gshared immutable bool m_isRTClass;
+        __gshared bool m_isRTClass;
     }
 
 private: