sha256_*.c: trim trailing whitespace

sha256_cryptopp.c

@@ -540,7 +540,7 @@ static void CRYPTOPP_FASTCALL X86_SHA256_HashBlocks(word32 *state, const word32
 
 #ifdef __GNUC__
 	".att_syntax prefix;"
-	: 
+	:
 	: "c" (state), "d" (data), "S" (SHA256_K+48), "D" (len)
 	#if CRYPTOPP_BOOL_X64
 		, "m" (workspace[0])

sha256_generic.c

@@ -13,7 +13,7 @@
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option) 
+ * Software Foundation; either version 2 of the License, or (at your option)
  * any later version.
  *
  */

sha256_sse2_amd64.c

@@ -4,7 +4,7 @@
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option) 
+ * Software Foundation; either version 2 of the License, or (at your option)
  * any later version.
  *
  */