vfscanf: fix possible invalid free due to uninitialized variable use

vfscanf() may use the variable 'alloc' uninitialized when taking the
branch introduced by commit b287cd745c2243f8e5114331763a5a9813b5f6ee.
Spotted by clang.

diff --git a/src/stdio/vfscanf.c b/src/stdio/vfscanf.c
index b5ebc16..b78a374 100644 (file)
--- a/src/stdio/vfscanf.c
+++ b/src/stdio/vfscanf.c
@@ -57,7 +57,7 @@ int vfscanf(FILE *restrict f, const char *restrict fmt, va_list ap)
 {
        int width;
        int size;
-       int alloc;
+       int alloc = 0;
        int base;
        const unsigned char *p;
        int c, t;