getentropy: fix UB if len==0

if len==0, an uninitalized variable would be returned

diff --git a/src/misc/getentropy.c b/src/misc/getentropy.c
index d2f282c..651ea95 100644 (file)
--- a/src/misc/getentropy.c
+++ b/src/misc/getentropy.c
@@ -6,7 +6,7 @@
 
 int getentropy(void *buffer, size_t len)
 {
-       int cs, ret;
+       int cs, ret = 0;
        char *pos = buffer;
 
        if (len > 256) {