Correct tick calculation

Author: JalonWong

src/time.rs

@@ -204,7 +204,7 @@ impl TickInstant for DwtInstant {
         if self.tick >= earlier.tick {
             self.tick - earlier.tick
         } else {
-            self.tick + (u32::MAX - earlier.tick)
+            self.tick + (u32::MAX - earlier.tick + 1)
         }
     }
 }

src/timer/syst.rs

@@ -252,7 +252,7 @@ impl TickInstant for SysTickInstant {
         if self.tick <= earlier.tick {
             earlier.tick - self.tick
         } else {
-            earlier.tick + (SYST::get_reload() - self.tick)
+            earlier.tick + (SYST::get_reload() - self.tick + 1)
         }
     }
 }