Fix compilation error in mode --enable-strict

Log2() is not available in the redirection lib.

/usr/bin/ld: ./.libs/libpcsclite.so: undefined reference to `log_msg'

Log2() is used in SYS_RandomInt() that is not called by the redirection
library so no problem here.

src/Makefile.am

@@ -25,6 +25,7 @@ libpcsclite_la_SOURCES = \
 	libredirect.c \
 	sys_unix.c
 libpcsclite_la_LDFLAGS = -version-info 1:0:0
+libpcsclite_la_CFLAGS = -DLIBREDIRECT
 
 libpcsclite_real_la_SOURCES = \
 	debug.c \

src/sys_unix.c

@@ -116,7 +116,9 @@ INTERNAL int SYS_RandomInt(void)
 	ret = getrandom(c, sizeof c, 0);
 	if (-1 == ret)
 	{
+#ifndef LIBREDIRECT
 		Log2(PCSC_LOG_ERROR, "getrandom() failed: %s", strerror(errno));
+#endif
 		return lrand48();
 	}
 	// this loop avoids trap representations that may occur in the naive solution