indent: use pragma once to avoid excessive auto indentation

The clang indent rules used to tidy the code cause undue indentation
when used with include guards.  This commit switches the only remaining
instance to use pgrama once.

tmc3/PCCMisc.h

@@ -33,8 +33,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef PCCMisc_h
-#define PCCMisc_h
+#pragma once
 
 #include <array>
 #include <cstddef>
@@ -252,5 +251,3 @@ countingSort(
 //---------------------------------------------------------------------------
 
 }  // namespace pcc
-
-#endif /* PCCMisc_h */

[jacob9800]

I love this online post here this is update for people can see Play Sliding Block Puzzle online have to exited for this fun so join it and i hope you have best way