Fix some wording to comply with respectful-code

https: //source.android.com/setup/contribute/respectful-code
Test: Unit tests pass
Change-Id: If447b2cf923f6bc7a3a3fb5f69b9fbc06a200ebb
diff --git a/recovery.cpp b/recovery.cpp
index f41ac6a..d26424a 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -559,15 +559,15 @@
   }
 }
 
-static bool bootreason_in_blacklist() {
+static bool bootreason_in_blocklist() {
   std::string bootreason = android::base::GetProperty("ro.boot.bootreason", "");
   if (!bootreason.empty()) {
     // More bootreasons can be found in "system/core/bootstat/bootstat.cpp".
-    static const std::vector<std::string> kBootreasonBlacklist{
+    static const std::vector<std::string> kBootreasonBlocklist{
       "kernel_panic",
       "Panic",
     };
-    for (const auto& str : kBootreasonBlacklist) {
+    for (const auto& str : kBootreasonBlocklist) {
       if (android::base::EqualsIgnoreCase(str, bootreason)) return true;
     }
   }
@@ -734,10 +734,10 @@
       // Log the error code to last_install when installation skips due to low battery.
       log_failure_code(kLowBattery, update_package);
       status = INSTALL_SKIPPED;
-    } else if (retry_count == 0 && bootreason_in_blacklist()) {
+    } else if (retry_count == 0 && bootreason_in_blocklist()) {
       // Skip update-on-reboot when bootreason is kernel_panic or similar
-      ui->Print("bootreason is in the blacklist; skip OTA installation\n");
-      log_failure_code(kBootreasonInBlacklist, update_package);
+      ui->Print("bootreason is in the blocklist; skip OTA installation\n");
+      log_failure_code(kBootreasonInBlocklist, update_package);
       status = INSTALL_SKIPPED;
     } else {
       // It's a fresh update. Initialize the retry_count in the BCB to 1; therefore we can later