Code tidy

Author: chrissnow

TESTS/mbed_hal/flash/functional_tests/main.cpp

@@ -102,7 +102,7 @@ static int time_cpu_cycles(uint32_t cycles)
     int timer_start = timer.read_us();
 
     volatile uint32_t delay = (volatile uint32_t)cycles;
-	delay_loop(delay);
+    delay_loop(delay);
     int timer_end = timer.read_us();
 
     timer.stop();