rts: use allocation helpers from RtsUtils

Just a tiny cleanup inspired by the following comment:
https://gitlab.haskell.org/ghc/ghc/-/issues/19437#note_334271
I was just getting familiar with rts code base so I
thought might as well do this.

1 files changed, 1 insertions, 1 deletions

diff --git a/rts/RtsFlags.c b/rts/RtsFlags.c
index 50de729183..11399e3103 100644
--- a/rts/RtsFlags.c
+++ b/rts/RtsFlags.c
@@ -2252,7 +2252,7 @@ static bool read_heap_profiling_flag(const char *arg)
                     RtsFlags.ProfFlags.bioSelector = selector;
                     break;
                 default:
-                    free(selector);
+                    stgFree(selector);
                 }
             }
             break;