simplify code copying @mnemonic in fill_insn()

cs.c

@@ -278,24 +278,14 @@ static void fill_insn(struct cs_struct *handle, cs_insn *insn, char *buffer, MCI
 	// find first space or tab
 	sp = buffer;
 	mnem = insn->mnemonic;
-	if (mci->csh->arch == CS_ARCH_X86 && mci->x86_prefix[0]) {
+	for (sp = buffer; *sp; sp++) {
-		for (sp = buffer; *sp; sp++) {
+		if (*sp == ' '|| *sp == '\t')
-			if (*sp == ' '|| *sp == '\t')
+			break;
-				break;
+		if (*sp == '|')	// lock|rep prefix for x86
-			if (*sp == '|')	// lock|rep prefix for x86
+			*sp = ' ';
-				*sp = ' ';
+		// copy to @mnemonic
-			// copy to @mnemonic
+		*mnem = *sp;
-			*mnem = *sp;
+		mnem++;
-			mnem++;
-		}
-	} else {
-		for (sp = buffer; *sp; sp++) {
-			if (*sp == ' '|| *sp == '\t')
-				break;
-			// copy to @mnemonic
-			*mnem = *sp;
-			mnem++;
-		}
 	}
 
 	*mnem = '\0';