Unreviewed, rolling out r206522.

Roll r206506 back in since the build fix landed in r206521

Reverted changeset:

"Unreviewed, rolling out r206506."
https://bugs.webkit.org/show_bug.cgi?id=162682
http://trac.webkit.org/changeset/206522

Canonical link: https://commits.webkit.org/180623@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@206525 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/JavaScriptCore/b3/B3FrequentedBlock.h

diff --git a/Source/JavaScriptCore/b3/B3FrequentedBlock.h b/Source/JavaScriptCore/b3/B3FrequentedBlock.h
index 3f98c68..9b63ff4 100644
--- a/Source/JavaScriptCore/b3/B3FrequentedBlock.h
+++ b/Source/JavaScriptCore/b3/B3FrequentedBlock.h
@@ -23,8 +23,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
-#ifndef B3FrequentedBlock_h
-#define B3FrequentedBlock_h
+#pragma once
 
 #if ENABLE(B3_JIT)
 
@@ -39,6 +38,3 @@
 } } // namespace JSC::B3
 
 #endif // ENABLE(B3_JIT)
-
-#endif // B3FrequentedBlock_h
-