Add back call to BitArray::ClearAll (dotnet/coreclr#7779)

Commit migrated from https://github.com/dotnet/coreclr/commit/5d2c2040cddb8789fb1d20df3c729cbed0d3997e

diff --git a/src/coreclr/src/gcinfo/gcinfoencoder.cpp b/src/coreclr/src/gcinfo/gcinfoencoder.cpp
index 716b3ae..a54be96 100644 (file)
--- a/src/coreclr/src/gcinfo/gcinfoencoder.cpp
+++ b/src/coreclr/src/gcinfo/gcinfoencoder.cpp
@@ -1352,6 +1352,7 @@ void GcInfoEncoder::Build()
     // Find out which slots are really used
     ///////////////////////////////////////////////////////////////////
 
+    couldBeLive.ClearAll();
     
 #ifdef PARTIALLY_INTERRUPTIBLE_GC_SUPPORTED
     if(m_NumCallSites)