Fix aksl_sprintf, wasnt properly using va_args

src/stdlib.c

@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <string.h>
+#include <stdarg.h>
 
 akerr_ErrorContext AKERR_NOIGNORE *aksl_malloc(size_t size, void **dst)
 {
@@ -122,6 +123,7 @@ akerr_ErrorContext AKERR_NOIGNORE *aksl_sprintf(int *count, char *restrict str,
     FAIL_ZERO_RETURN(e, count, AKERR_NULLPOINTER, "count=%p, str=%p, format=%p", (void *)count, (void *)str, (void *)format);
     FAIL_ZERO_RETURN(e, str, AKERR_NULLPOINTER, "count=%p, str=%p, format=%p", (void *)count, (void *)str, (void *)format);
     FAIL_ZERO_RETURN(e, format, AKERR_NULLPOINTER, "count=%p, str=%p, format=%p", (void *)count, (void *)str, (void *)format);
+    va_start(args, format);
     *count = vsprintf(str, format, args);
     FAIL_NONZERO_RETURN(e, (*count == -1), errno, "Short write");
     SUCCEED_RETURN(e);
@@ -160,6 +162,6 @@ akerr_ErrorContext AKERR_NOIGNORE *aksl_realpath(const char *restrict path, char
     PREPARE_ERROR(e);
     FAIL_ZERO_RETURN(e, path, AKERR_NULLPOINTER, "path=%p, dest=%p", (void *)path, (void *)resolved_path);
     result = realpath(path, resolved_path);
-    FAIL_ZERO_RETURN(e, result, errno, "Error");
+    FAIL_ZERO_RETURN(e, result, errno, "path=%s, dest=%s", path, resolved_path);
     SUCCEED_RETURN(e);
 }