rtl_fm/rtl_test: fix build with MSVC after recent changes

Signed-off-by: Steve Markgraf <steve@steve-m.de>

src/rtl_fm.c

@@ -783,11 +783,12 @@ static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx)
 {
 	int i;
 	struct dongle_state *s = ctx;
+	struct demod_state *d = s->demod_target;
+
 	if (do_exit) {
 		return;}
 	if (!ctx) {
 		return;}
-	struct demod_state *d = s->demod_target;
 	if (s->mute) {
 		for (i=0; i<s->mute; i++) {
 			buf[i] = 127;}

src/rtl_test.c

@@ -149,6 +149,7 @@ static void ppm_clock_init(void)
 #endif
 }
 
+#ifndef _WIN32
 static int ppm_report(void)
 {
 	int real_rate;
@@ -158,6 +159,7 @@ static int ppm_report(void)
 	real_rate = (int)(ppm_total * 1000000000L / ns);
 	return (int)round((double)(1000000 * (real_rate - (int)samp_rate)) / (double)samp_rate);
 }
+#endif
 
 static void ppm_test(uint32_t len)
 {