STY: avoid while loop

Author: christianbrodbeck

surfer/viz.py

@@ -2187,7 +2187,7 @@ def save_movie(self, fname, time_dilation=4., tmin=None, tmax=None,
             raise ValueError("tmax=%r is greater than the latest time point "
                              "(%r)" % (tmax, self._times[-1]))
         times = np.arange(tmin, tmax + sys.float_info.epsilon, tstep)
-        while times[-1] > tmax:
+        if times[-1] > tmax:
             times = times[:-1]
         interp_func = interp1d(self._times, np.arange(self.n_times))
         time_idx = interp_func(times)