File fix-gcc7.patch of Package dkim

--- libdkim/src/dkimverify.cpp.orig	2019-01-12 17:18:27.385212897 +0100
+++ libdkim/src/dkimverify.cpp	2019-01-12 17:19:39.756467635 +0100
@@ -211,14 +211,14 @@
 unsigned DecodeBase64(char *ptr)
 {
 	static const unsigned char base64_table[256] = {
-		-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-		-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,
-		-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,
-		-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1,
-		-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-		-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-		-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-		-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
+		0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+		0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,62,0xff,0xff,0xff,63,52,53,54,55,56,57,58,59,60,61,0xff,0xff,0xff,0xff,0xff,0xff,
+		0xff, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,0xff,0xff,0xff,0xff,0xff,
+		0xff,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,0xff,0xff,0xff,0xff,0xff,
+		0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+		0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+		0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
+		0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 
 	unsigned char *s = (unsigned char *)ptr;
 	unsigned char *d = (unsigned char *)ptr;
--- libdkim/src/dkim.cpp.orig	2019-01-12 17:22:20.802809217 +0100
+++ libdkim/src/dkim.cpp	2019-01-12 17:24:26.685512905 +0100
@@ -226,13 +226,13 @@
 }
 
 
-char* DKIM_CALL DKIMVersion()
+const char* DKIM_CALL DKIMVersion()
 {
 	return VERSION_STRING;
 }
 
 
-static char* DKIMErrorStrings[-1-DKIM_MAX_ERROR] = {
+static const char* DKIMErrorStrings[-1-DKIM_MAX_ERROR] = {
 	"DKIM_FAIL",
 	"DKIM_BAD_SYNTAX",
 	"DKIM_SIGNATURE_BAD",
@@ -259,7 +259,7 @@
 };
 
 
-char* DKIM_CALL DKIMGetErrorString( int ErrorCode )
+const char* DKIM_CALL DKIMGetErrorString( int ErrorCode )
 {
 	if (ErrorCode >= 0 || ErrorCode <= DKIM_MAX_ERROR)
 		return "Unknown";
--- libdkim/src/dkim.h.orig	2019-01-12 17:23:45.417937869 +0100
+++ libdkim/src/dkim.h	2019-01-12 17:24:20.393577698 +0100
@@ -159,9 +159,9 @@
 int DKIM_CALL DKIMVerifyGetDetails( DKIMContext* pVerifyContext, int* nSigCount, DKIMVerifyDetails** pDetails, char* szPractices );
 void DKIM_CALL DKIMVerifyFree( DKIMContext* pVerifyContext );
 
-char *DKIM_CALL DKIMVersion();
+const char *DKIM_CALL DKIMVersion();
 
-char *DKIM_CALL DKIMGetErrorString( int ErrorCode );
+const char *DKIM_CALL DKIMGetErrorString( int ErrorCode );
 
 #ifndef _WIN32
 #include "macros.h"