fix build error

Author: OhmV-IR

wpimath/src/main/native/include/frc/MathUtil.h

@@ -258,7 +258,7 @@ constexpr Translation3d SlewRateLimit(
   if (dist < 1e-9_m) {
     return next;
   }
-  units::meters_per_second_t = units::math::min(dist / dt, maxVelocity);
+  units::meters_per_second_t velocity = units::math::min(dist / dt, maxVelocity);
   return current + diff * (velocity / dist).value();
 }