fix for ubsan on unittest.h fastrand()

unit_test/unit_test.cc

Index: unit_test/unit_test.cc
diff --git a/unit_test/unit_test.cc b/unit_test/unit_test.cc
index c3fec6b39faa2c83ccee7fd37c5dd5627c6e5fd7..c98c285cbfe9dc67a5eb0d32b6a7a1cd595ad885 100644
--- a/unit_test/unit_test.cc
+++ b/unit_test/unit_test.cc
@@ -20,7 +20,7 @@
 // TODO(fbarchard): Add command line parsing to pass this as option.
 #define BENCHMARK_ITERATIONS 1
 
-int fastrand_seed = 0xfb;
+unsigned int fastrand_seed = 0xfb;
 
 DEFINE_int32(libyuv_width, 0, "width of test image.");
 DEFINE_int32(libyuv_height, 0, "height of test image.");
@@ -125,7 +125,7 @@ LibYUVColorTest::LibYUVColorTest() :
     benchmark_cpu_info_ = atoi(cpu_flags);  // NOLINT
   }
   if (FLAGS_libyuv_cpu_info) {
-   benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
+    benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
   }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
@@ -177,7 +177,7 @@ LibYUVScaleTest::LibYUVScaleTest() :
     benchmark_cpu_info_ = atoi(cpu_flags);  // NOLINT
   }
   if (FLAGS_libyuv_cpu_info) {
-   benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
+    benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
   }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
@@ -229,7 +229,7 @@ LibYUVRotateTest::LibYUVRotateTest() :
     benchmark_cpu_info_ = atoi(cpu_flags);  // NOLINT
   }
   if (FLAGS_libyuv_cpu_info) {
-   benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
+    benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
   }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
@@ -281,7 +281,7 @@ LibYUVPlanarTest::LibYUVPlanarTest() :
     benchmark_cpu_info_ = atoi(cpu_flags);  // NOLINT
   }
   if (FLAGS_libyuv_cpu_info) {
-   benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
+    benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
   }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
@@ -333,7 +333,7 @@ LibYUVBaseTest::LibYUVBaseTest() :
     benchmark_cpu_info_ = atoi(cpu_flags);  // NOLINT
   }
   if (FLAGS_libyuv_cpu_info) {
-   benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
+    benchmark_cpu_info_ = FLAGS_libyuv_cpu_info;
   }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *