Remove more unnecessary uses of fromJust

src/ShellCheck/Analytics.hs

@@ -1996,18 +1996,18 @@ checkQuotesInLiterals params t =
 
     readF _ expr name = do
         assignment <- getQuotes name
-        return
+        return $ case assignment of
-          (if isJust assignment
+          Just j
-              && not (isParamTo parents "eval" expr)
+              | not (isParamTo parents "eval" expr)
               && not (isQuoteFree parents expr)
               && not (squashesQuotes expr)
-              then [
+              -> [
-                  makeComment WarningC (fromJust assignment) 2089 $
+                  makeComment WarningC j 2089 $
                       "Quotes/backslashes will be treated literally. " ++ suggestion,
                   makeComment WarningC (getId expr) 2090
                       "Quotes/backslashes in this variable will not be respected."
                 ]
-              else [])
+          _ -> []
     suggestion =
         if supportsArrays (shellType params)
         then "Use an array."

src/ShellCheck/Parser.hs

@@ -2056,7 +2056,7 @@ readSimpleCommand = called "simple command" $ do
             firstArgument <- ignoreProblemsOf . optionMaybe . try . lookAhead $ readCmdWord
             suffix <- option [] $ getParser readCmdSuffix
                     -- If `export` or other modifier commands are called with `builtin` we have to look at the first argument
-                    (if isCommand ["builtin"] cmd && isJust firstArgument then fromJust firstArgument else cmd) [
+                    (if isCommand ["builtin"] cmd then fromMaybe cmd firstArgument else cmd) [
                         (["declare", "export", "local", "readonly", "typeset"], readModifierSuffix),
                         (["time"], readTimeSuffix),
                         (["let"], readLetSuffix),