Fix more warnings

src/sound/midi_rtmidi.cpp

@@ -39,6 +39,7 @@ extern "C" {
 // Disable c99-designator to avoid the warnings in rtmidi_*_device
 #ifdef __clang__
 #    if __has_warning("-Wc99-designator")
+#        pragma clang diagnostic push
 #        pragma clang diagnostic ignored "-Wc99-designator"
 #    endif
 #endif
@@ -302,4 +303,11 @@ const device_t rtmidi_input_device = {
     .force_redraw  = NULL,
     .config        = midi_input_config
 };
+
+#ifdef __clang__
+#    if __has_warning("-Wc99-designator")
+#        pragma clang diagnostic pop
+#    endif
+#endif
+
 }

src/sound/snd_opl_ymfm.cpp

@@ -29,6 +29,15 @@ extern "C" {
 #include <86box/snd_opl.h>
 #include <86box/mem.h>
 #include <86box/rom.h>
+
+// Disable c99-designator to avoid the warnings in *_ymfm_device
+#ifdef __clang__
+#    if __has_warning("-Wc99-designator")
+#        pragma clang diagnostic push
+#        pragma clang diagnostic ignored "-Wc99-designator"
+#    endif
+#endif
+
 }
 
 #define RSM_FRAC 10
@@ -432,4 +441,11 @@ const fm_drv_t ymfm_drv {
     &ymfm_drv_set_do_cycles,
     NULL,
 };
+
+#ifdef __clang__
+#    if __has_warning("-Wc99-designator")
+#        pragma clang diagnostic pop
+#    endif
+#endif
+
 }