Reword some comments.

There were a handful of comments that use "blacklist" and "whitelist".
They are easy to fix.

Change-Id: I49a9592393b43fc85e92b4a00a585b504dede75a
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/41645
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
diff --git a/ssl/ssl_versions.cc b/ssl/ssl_versions.cc
index d95aeb3..3bbb4e3 100644
--- a/ssl/ssl_versions.cc
+++ b/ssl/ssl_versions.cc
@@ -193,11 +193,11 @@
     min_version = TLS1_3_VERSION;
   }
 
-  // OpenSSL's API for controlling versions entails blacklisting individual
-  // protocols. This has two problems. First, on the client, the protocol can
-  // only express a contiguous range of versions. Second, a library consumer
-  // trying to set a maximum version cannot disable protocol versions that get
-  // added in a future version of the library.
+  // The |SSL_OP_NO_*| flags disable individual protocols. This has two
+  // problems. First, prior to TLS 1.3, the protocol can only express a
+  // contiguous range of versions. Second, a library consumer trying to set a
+  // maximum version cannot disable protocol versions that get added in a future
+  // version of the library.
   //
   // To account for both of these, OpenSSL interprets the client-side bitmask
   // as a min/max range by picking the lowest contiguous non-empty range of
diff --git a/util/check_imported_libraries.go b/util/check_imported_libraries.go
index 835d5fd..187e514 100644
--- a/util/check_imported_libraries.go
+++ b/util/check_imported_libraries.go
@@ -12,9 +12,9 @@
 // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-// check_imported_libraries.go checks that each of its arguments only imports a
-// whitelist of allowed libraries. This is used to avoid accidental dependencies
-// on libstdc++.so.
+// check_imported_libraries.go checks that each of its arguments only imports
+// allowed libraries. This is used to avoid accidental dependencies on
+// libstdc++.so.
 package main
 
 import (
diff --git a/util/read_symbols.go b/util/read_symbols.go
index 791ea5d..96c148a 100644
--- a/util/read_symbols.go
+++ b/util/read_symbols.go
@@ -119,8 +119,8 @@
 			// should not be prefixed. It is a limitation of this
 			// symbol-prefixing strategy that we cannot distinguish
 			// our own inline symbols (which should be prefixed)
-			// from the system's (which should not), so we blacklist
-			// known system symbols.
+			// from the system's (which should not), so we skip known
+			// system symbols.
 			"__local_stdio_printf_options",
 			"__local_stdio_scanf_options",
 			"_vscprintf",