Fix to #931 (#933)

Fix to PR #931

Author: mcbarton

.github/actions/Build_LLVM_WASM/action.yml

@@ -81,7 +81,7 @@ runs:
 
         # Trim source trees so the cache stays small. Cling rows additionally
         # need llvm/{utils} for runtime tablegen lookups.
-        rm -rf $(find . -maxdepth 1 ! -name "build" ! -name "llvm" ! -name "clang" ! -name ".")
+        rm -rf $(find . -maxdepth 1 ! -name "build" ! -name "llvm" ! -name "clang" ! -name "." ! -name "native_build"
         keep=('!' -name include '!' -name lib '!' -name cmake '!' -name .)
         if [[ "${cling_on}" == "ON" ]]; then
           keep=('!' -name include '!' -name lib '!' -name cmake '!' -name utils '!' -name .)
@@ -175,7 +175,7 @@ runs:
 
         # Trim source trees so the cache stays small. Cling rows additionally
         # need llvm/{utils} for runtime tablegen lookups.
-        rm -r -force $(find.exe . -maxdepth 1 ! -name "build" ! -name "llvm" ! -name "clang" ! -name ".")
+        rm -r -force $(find.exe . -maxdepth 1 ! -name "build" ! -name "llvm" ! -name "clang" ! -name "." ! -name "native_build")
         $keep = @("!", "-name", "include", "!", "-name", "lib", "!", "-name", "cmake", "!", "-name", ".")
         if ( $cling_on ) {
           $keep = @("!", "-name", "include", "!", "-name", "lib", "!", "-name", "cmake", "!", "-name", "utils", "!", "-name", ".")