Merge pull request #3758 from Geod24/duration-fixup

`core.memory`: Make GC.[profile]stats safe/nothrow/nogc

Signed-off-by: Rainer Schuetze <rainers@users.noreply.github.com>
Signed-off-by: Vladimir Panteleev <CyberShadow@users.noreply.github.com>
Signed-off-by: Max Haughton <maxhaton@users.noreply.github.com>
Merged-on-behalf-of: Max Haughton <maxhaton@users.noreply.github.com>

Author: dlang-bot

src/core/gc/gcinterface.d

@@ -141,13 +141,13 @@ interface GC
      * Retrieve statistics about garbage collection.
      * Useful for debugging and tuning.
      */
-    core.memory.GC.Stats stats() nothrow;
+    core.memory.GC.Stats stats() @safe nothrow @nogc;
 
     /**
      * Retrieve profile statistics about garbage collection.
      * Useful for debugging and tuning.
      */
-    core.memory.GC.ProfileStats profileStats() nothrow @safe;
+    core.memory.GC.ProfileStats profileStats() @safe nothrow @nogc;
 
     /**
      * add p to list of roots