Initialise dir to avoid a compiler warning.
diff --git a/crypto/x509/by_dir.c b/crypto/x509/by_dir.c
index d566791..b4a2171 100644
--- a/crypto/x509/by_dir.c
+++ b/crypto/x509/by_dir.c
@@ -114,7 +114,7 @@
 	{
 	int ret=0;
 	BY_DIR *ld;
-	char *dir;
+	char *dir = NULL;
 
 	ld=(BY_DIR *)ctx->method_data;