Fix non-noise cpplint errors in //crypto.

crypto/p224_unittest.cc

Index: crypto/p224_unittest.cc
diff --git a/crypto/p224_unittest.cc b/crypto/p224_unittest.cc
index faa08ebd360df974aba8a060db52c6e14f58cbde..8c7edac76bd55d3fdb3262bf5ae8fafe516d6184 100644
--- a/crypto/p224_unittest.cc
+++ b/crypto/p224_unittest.cc
@@ -778,8 +778,8 @@ TEST(P224, ExternalToInternalAndBack) {
   const std::string external = point.ToString();
 
   ASSERT_EQ(external.size(), 56u);
-  EXPECT_TRUE(memcmp(external.data(), kBasePointExternal,
-                     sizeof(kBasePointExternal)) == 0);
+  EXPECT_EQ(0, memcmp(external.data(), kBasePointExternal,
+                      sizeof(kBasePointExternal)));
 }
 
 TEST(P224, ScalarBaseMult) {
@@ -789,8 +789,8 @@ TEST(P224, ScalarBaseMult) {
     p224::ScalarBaseMult(kNISTTestVectors[i].scalar, &point);
     const std::string external = point.ToString();
     ASSERT_EQ(external.size(), 56u);
-    EXPECT_TRUE(memcmp(external.data(), kNISTTestVectors[i].affine,
-                       external.size()) == 0);
+    EXPECT_EQ(0, memcmp(external.data(), kNISTTestVectors[i].affine,
+                        external.size()));
   }
 }
 
@@ -804,9 +804,9 @@ TEST(P224, Addition) {
 
   p224::Negate(b, &minus_b);
   p224::Add(a, b, &sum);
-  EXPECT_TRUE(memcmp(&sum, &a, sizeof(sum)) != 0);
+  EXPECT_EQ(0, memcmp(&sum, &a, sizeof(sum)));
   p224::Add(minus_b, sum, &a_again);
-  EXPECT_TRUE(a_again.ToString() == a.ToString());
+  EXPECT_EQ(a_again.ToString(), a.ToString());
 }
 
 TEST(P224, Infinity) {
@@ -816,7 +816,7 @@ TEST(P224, Infinity) {
   // Test that x^0 = ∞.
   Point a;
   p224::ScalarBaseMult(reinterpret_cast<const uint8_t*>(zeros), &a);
-  EXPECT_TRUE(memcmp(zeros, a.ToString().data(), sizeof(zeros)) == 0);
+  EXPECT_EQ(0, memcmp(zeros, a.ToString().data(), sizeof(zeros)));
 
   // We shouldn't allow ∞ to be imported.
   EXPECT_FALSE(a.SetFromString(std::string(zeros, sizeof(zeros))));