libtest: fix int-in-bool-context warnings

GCC 7 complained:
‘*’ in boolean context, suggest ‘&&’ instead [-Wint-in-bool-context]

2 files changed, 2 insertions, 2 deletions

diff --git a/tests/libtest/lib571.c b/tests/libtest/lib571.c
index 40a78fa84..f19b643ff 100644
--- a/tests/libtest/lib571.c
+++ b/tests/libtest/lib571.c
@@ -56,7 +56,7 @@ static size_t rtp_write(void *ptr, size_t size, size_t nmemb, void *stream)
   int channel = RTP_PKT_CHANNEL(data);
   int message_size;
   int coded_size = RTP_PKT_LENGTH(data);
-  size_t failure = (size * nmemb) ? 0 : 1;
+  size_t failure = (size && nmemb) ? 0 : 1;
   int i;
   (void)stream;
 
diff --git a/tests/libtest/libntlmconnect.c b/tests/libtest/libntlmconnect.c
index 40a837ca6..2ae7bb2fb 100644
--- a/tests/libtest/libntlmconnect.c
+++ b/tests/libtest/libntlmconnect.c
@@ -44,7 +44,7 @@ static size_t callback(char *ptr, size_t size, size_t nmemb, void *data)
   long longdata;
   CURLcode code;
 
-  const size_t failure = (size * nmemb) ? 0 : 1;
+  const size_t failure = (size && nmemb) ? 0 : 1;
 
   char *output = malloc(size * nmemb + 1);
   if(!output) {