4 files changed, 5 insertions, 27 deletions
diff --git a/services/common/tokenserverclient.js b/services/common/tokenserverclient.js
index b220ab586..ca40f7d93 100644
--- a/services/common/tokenserverclient.js
+++ b/services/common/tokenserverclient.js
@@ -149,10 +149,7 @@ TokenServerClientServerError.prototype._toStringFields = function() {
  */
 this.TokenServerClient = function TokenServerClient() {
   this._log = Log.repository.getLogger("Common.TokenServerClient");
-  let level = "Debug";
-  try {
-    level = Services.prefs.getCharPref(PREF_LOG_LEVEL);
-  } catch (ex) {}
+  let level = Services.prefs.getCharPref(PREF_LOG_LEVEL, "Debug");
   this._log.level = Log.Level[level];
 }
 TokenServerClient.prototype = {
diff --git a/services/crypto/modules/WeaveCrypto.js b/services/crypto/modules/WeaveCrypto.js
index c040c4f6f..d0d5bdb18 100644
--- a/services/crypto/modules/WeaveCrypto.js
+++ b/services/crypto/modules/WeaveCrypto.js
@@ -51,11 +51,7 @@ WeaveCrypto.prototype = {
         this.prefBranch = Services.prefs.getBranch("services.sync.log.");
         this.prefBranch.addObserver("cryptoDebug", this.observer, false);
         this.observer._self = this;
-        try {
-          this.debug = this.prefBranch.getBoolPref("cryptoDebug");
-        } catch (x) {
-          this.debug = false;
-        }
+        this.debug = this.prefBranch.getBoolPref("cryptoDebug", false);
         XPCOMUtils.defineLazyGetter(this, 'encoder', () => new TextEncoder(UTF_LABEL));
         XPCOMUtils.defineLazyGetter(this, 'decoder', () => new TextDecoder(UTF_LABEL, { fatal: true }));
     },
diff --git a/services/fxaccounts/FxAccounts.jsm b/services/fxaccounts/FxAccounts.jsm
index 5bed881ea..0e072ee74 100644
--- a/services/fxaccounts/FxAccounts.jsm
+++ b/services/fxaccounts/FxAccounts.jsm
@@ -1000,12 +1000,7 @@ FxAccountsInternal.prototype = {
     // The purpose of this pref is to expedite any auth errors as the result of a
     // expired or revoked FxA session token, e.g., from resetting or changing the FxA
     // password.
-    let ignoreCachedAuthCredentials = false;
-    try {
-      ignoreCachedAuthCredentials = Services.prefs.getBoolPref("services.sync.debug.ignoreCachedAuthCredentials");
-    } catch(e) {
-      // Pref doesn't exist
-    }
+    let ignoreCachedAuthCredentials = Services.prefs.getBoolPref("services.sync.debug.ignoreCachedAuthCredentials", false);
     let mustBeValidUntil = this.now() + ASSERTION_USE_PERIOD;
     let accountData = yield currentState.getUserAccountData(["cert", "keyPair", "sessionToken"]);
 
@@ -1239,12 +1234,7 @@ FxAccountsInternal.prototype = {
   },
 
   requiresHttps: function() {
-    let allowHttp = false;
-    try {
-      allowHttp = Services.prefs.getBoolPref("identity.fxaccounts.allowHttp");
-    } catch(e) {
-      // Pref doesn't exist
-    }
+    let allowHttp = Services.prefs.getBoolPref("identity.fxaccounts.allowHttp", false);
     return allowHttp !== true;
   },
 
diff --git a/services/sync/modules/status.js b/services/sync/modules/status.js
index a5b8305b4..1233cbe14 100644
--- a/services/sync/modules/status.js
+++ b/services/sync/modules/status.js
@@ -125,12 +125,7 @@ this.Status = {
   resetSync: function resetSync() {
     // Logger setup.
     let logPref = PREFS_BRANCH + "log.logger.status";
-    let logLevel = "Trace";
-    try {
-      logLevel = Services.prefs.getCharPref(logPref);
-    } catch (ex) {
-      // Use default.
-    }
+    let logLevel = Services.prefs.getCharPref(logPref, "Trace");
     this._log.level = Log.Level[logLevel];
 
     this._log.info("Resetting Status.");