Suppress warnings in Example8 compilation

Author: oclyke

libraries/Examples/examples/Example8_BLE_LED/nus_main.c

@@ -47,6 +47,11 @@
 #include "gap_api.h"
 #include "fmpl/fmpl_api.h"
 
+extern void debug_print(const char* f, const char* F, uint16_t L);
+extern void debug_printf(char* fmt, ...);
+extern void set_led_high( void );
+extern void set_led_low( void );
+
 /**************************************************************************************************
   Macros
 **************************************************************************************************/

platform.txt

@@ -28,7 +28,7 @@ version=0.1.0
 
 ## Extra Flags (can be overridden in platform.local.txt)
 compiler.extra_flags.cpp=
-compiler.extra_flags.c=
+compiler.extra_flags.c=-Wno-unused-but-set-variable
 compiler.extra_flags.S=
 compiler.extra_flags.ld=
 compiler.extra_flags.ar=