sc-hsm: use memcpy() instead of strncpy()

src/libopensc/card-sc-hsm.c

@@ -1458,7 +1458,7 @@ static int get_CAR(u8 *carstr, sc_context_t *ctx, const u8 *buf, size_t buflen)
  }
 
  /* return CAR */
- strncpy((char*) carstr, (const char*) car, taglen);
+ memcpy(carstr, car, taglen);
  LOG_FUNC_RETURN(ctx, SC_SUCCESS);
 }
 

src/tools/sc-hsm-tool.c

@@ -1839,7 +1839,7 @@ static void get_CHR(char *chrstr, int is_cvc, sc_context_t *ctx, const u8 *buf,
  }
 
  /* return CHR */
- strncpy(chrstr, (const char*) chr, taglen);
+ memcpy(chrstr, chr, taglen);
 }