examples: clean up some warnings

examples/blame.c

@@ -37,8 +37,8 @@ static void parse_opts(struct opts *o, int argc, char *argv[]);
 
 int main(int argc, char *argv[])
 {
-	int i, line, break_on_null_hunk;
-	size_t rawsize;
+	int line, break_on_null_hunk;
+	size_t i, rawsize;
 	char spec[1024] = {0};
 	struct opts o = {0};
 	const char *rawdata;

examples/network/clone.c

@@ -48,6 +48,8 @@ static void print_progress(const progress_data *pd)
 
 static int sideband_progress(const char *str, int len, void *payload)
 {
+	(void)payload; // unused
+
 	printf("remote: %*s", len, str);
 	fflush(stdout);
 	return 0;