File signed-char.patch of Package hbci4java

Index: hbci4java-2.5.12.hibiscus.2.6.18/chipcard/src/include/ctapi-tools.h
===================================================================
--- hbci4java-2.5.12.hibiscus.2.6.18.orig/chipcard/src/include/ctapi-tools.h
+++ hbci4java-2.5.12.hibiscus.2.6.18/chipcard/src/include/ctapi-tools.h
@@ -45,7 +45,7 @@ typedef struct CTAPI_ERROR {
     size_t             reqLen;
     unsigned char      response[300];
     size_t             resLen;
-    char               ret;
+    signed char        ret;
     unsigned short int status;
 } CTAPI_ERROR;
 
@@ -57,7 +57,7 @@ typedef struct CTAPI_MapInt2String {
 
 // error codes
 typedef struct CTAPI_MapChar2String {
-    char        code;
+    signed char code;
     const char* msg;
 } CTAPI_MapChar2String;
 
@@ -141,7 +141,7 @@ bool               CTAPI_initCTAPI(CTAPI
 unsigned short int CTAPI_performWithCT(const char *name,unsigned short int lenIn,unsigned char *command,unsigned short int *lenOut,unsigned char *response);
 unsigned short int CTAPI_performWithCard(const char *name,unsigned short int lenIn,unsigned char *command,unsigned short int *lenOut,unsigned char *response);
 
-char*              CTAPI_getErrorString(char status);
+char*              CTAPI_getErrorString(signed char status);
 char*              CTAPI_getStatusString(unsigned short int status);
 bool               CTAPI_isOK(unsigned short int status);
 
Index: hbci4java-2.5.12.hibiscus.2.6.18/chipcard/src/lowlevel/ctapi-tools.cpp
===================================================================
--- hbci4java-2.5.12.hibiscus.2.6.18.orig/chipcard/src/lowlevel/ctapi-tools.cpp
+++ hbci4java-2.5.12.hibiscus.2.6.18/chipcard/src/lowlevel/ctapi-tools.cpp
@@ -67,7 +67,7 @@ char* CTAPI_getStatusString(unsigned sho
     return ret; 
 }
 
-char* CTAPI_getErrorString(char status)
+char* CTAPI_getErrorString(signed char status)
 {
     CTAPI_MapChar2String *codes=(CTAPI_MapChar2String*)CTAPI_errorMsgs;
     
@@ -133,7 +133,7 @@ static unsigned short int perform(unsign
     memcpy(CTAPI_error.request,command,lenIn);
     CTAPI_error.reqLen=lenIn;
 
-    char err;
+    signed char err;
     int  retries=3;
     while (retries--) { 
         err=(*datafunc)(ctnum,&dad,&sad,lenIn,command,&lenOut_return,response_local);