cpplint: Cleanup errors

Cleanup errors from upstream cpplint in preparation
for moving art's cpplint fork to upstream tip-of-tree cpplint.

Test: cd art && mm
Bug: 68951293
Change-Id: I15faed4594cbcb8399850f8bdee39d42c0c5b956
diff --git a/compiler/optimizing/code_generator_x86_64.cc b/compiler/optimizing/code_generator_x86_64.cc
index 8f7961e..d64a497 100644
--- a/compiler/optimizing/code_generator_x86_64.cc
+++ b/compiler/optimizing/code_generator_x86_64.cc
@@ -970,7 +970,7 @@
     case kCondGT: return kAbove;
     case kCondGE: return kAboveEqual;
     default:      break;  // should not happen
-  };
+  }
   LOG(FATAL) << "Unreachable";
   UNREACHABLE();
 }
@@ -2635,7 +2635,7 @@
         default:
           LOG(FATAL) << "Unexpected type conversion from " << input_type
                      << " to " << result_type;
-      };
+      }
       break;
 
     case DataType::Type::kFloat64:
@@ -2948,7 +2948,7 @@
         default:
           LOG(FATAL) << "Unexpected type conversion from " << input_type
                      << " to " << result_type;
-      };
+      }
       break;
 
     case DataType::Type::kFloat64:
@@ -3000,7 +3000,7 @@
         default:
           LOG(FATAL) << "Unexpected type conversion from " << input_type
                      << " to " << result_type;
-      };
+      }
       break;
 
     default: