max_consecutive_nonmonotonic_steps should be int

Found via Visual Studio warning.

Change-Id: Id2cd7de562dfc8cd35df5d5f5220dd2d7350eb2c

internal/ceres/minimizer.h

diff --git a/internal/ceres/minimizer.h b/internal/ceres/minimizer.h
index 28b76ce..cfc98a3 100644
--- a/internal/ceres/minimizer.h
+++ b/internal/ceres/minimizer.h
@@ -100,7 +100,7 @@
     double eta;
     bool jacobi_scaling;
     bool use_nonmonotonic_steps;
-    bool max_consecutive_nonmonotonic_steps;
+    int max_consecutive_nonmonotonic_steps;
     vector<int> lsqp_iterations_to_dump;
     DumpFormatType lsqp_dump_format_type;
     string lsqp_dump_directory;