libopkg: run prerm scripts for the old version also on upgrade

[oweals/opkg-lede.git] / libopkg / sprintf_alloc.c

diff --git a/libopkg/sprintf_alloc.c b/libopkg/sprintf_alloc.c
index e2513ecee5fda05c59861f6d08d0205d71270faa..aef8e066c3a102f5411e59ec5397beca9424f154 100644 (file)
--- a/libopkg/sprintf_alloc.c
+++ b/libopkg/sprintf_alloc.c
@@ -23,9 +23,9 @@ sprintf_alloc(char **str, const char *fmt, ...)
 {
        va_list ap;
        int n;
-       unsigned int size = 1;
+       unsigned int size = 0;
 
-       *str = xcalloc(1, size);
+       *str = NULL;
 
        for (;;) {
                va_start(ap, fmt);