[kvm-unit-tests PATCH] lib: use %zu conversion for sizeof to fix i386 build

[Radim Krčmář <rkrcmar@xxxxxxxxxx>]

Fixes this GCC error:

In file included from lib/report.c:13:0:
lib/libcflat.h:134:10: error: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 6 has type ‘unsigned int’ [-Werror=format=]
   printf("%s:%d: assert failed: %s: " fmt "\n",  \
          ^
lib/report.c:53:2: note: in expansion of macro ‘assert_msg’
  assert_msg(len < sizeof(prefixes), "%d >= %lu", len, sizeof(prefixes));
  ^~~~~~~~~~
lib/report.c:53:46: note: format string is defined here
  assert_msg(len < sizeof(prefixes), "%d >= %lu", len, sizeof(prefixes));
                                            ~~^
                                            %u

Signed-off-by: Radim Krčmář <rkrcmar@xxxxxxxxxx>
---
 lib/report.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/report.c b/lib/report.c
index f7af596f1fc4..b002d2107e37 100644
--- a/lib/report.c
+++ b/lib/report.c
@@ -35,14 +35,14 @@ void report_prefix_pushf(const char *prefix_fmt, ...)
 	spin_lock(&lock);
 
 	len = strlen(prefixes);
-	assert_msg(len < sizeof(prefixes), "%d >= %lu", len, sizeof(prefixes));
+	assert_msg(len < sizeof(prefixes), "%d >= %zu", len, sizeof(prefixes));
 	start = len;
 
 	va_start(va, prefix_fmt);
 	len += vsnprintf(&prefixes[len], sizeof(prefixes) - len, prefix_fmt,
 			 va);
 	va_end(va);
-	assert_msg(len < sizeof(prefixes), "%d >= %lu", len, sizeof(prefixes));
+	assert_msg(len < sizeof(prefixes), "%d >= %zu", len, sizeof(prefixes));
 
 	assert_msg(!strstr(&prefixes[start], PREFIX_DELIMITER),
 		   "Prefix \"%s\" contains delimiter \"" PREFIX_DELIMITER "\"",
@@ -50,7 +50,7 @@ void report_prefix_pushf(const char *prefix_fmt, ...)
 
 	len += snprintf(&prefixes[len], sizeof(prefixes) - len,
 			PREFIX_DELIMITER);
-	assert_msg(len < sizeof(prefixes), "%d >= %lu", len, sizeof(prefixes));
+	assert_msg(len < sizeof(prefixes), "%d >= %zu", len, sizeof(prefixes));
 
 	spin_unlock(&lock);
 }
-- 
2.13.0