Remove trailing whitespace

src/libexpr/attr-path.cc

@@ -62,7 +62,7 @@ std::pair<Value *, Pos> findAlongAttrPath(EvalState & state, const string & attr
                 throw TypeError(
                     "the expression selected by the selection path '%1%' should be a set but is %2%",
                     attrPath,
-                    showType(*v)); 
+                    showType(*v));
             if (attr.empty())
                 throw Error("empty attribute name in selection path '%1%'", attrPath);
 
@@ -79,7 +79,7 @@ std::pair<Value *, Pos> findAlongAttrPath(EvalState & state, const string & attr
                 throw TypeError(
                     "the expression selected by the selection path '%1%' should be a list but is %2%",
                     attrPath,
-                    showType(*v)); 
+                    showType(*v));
             if (attrIndex >= v->listSize())
                 throw AttrPathNotFound("list index %1% in selection path '%2%' is out of range", attrIndex, attrPath);
 

src/libexpr/lexer.l

@@ -219,4 +219,3 @@ or          { return OR_KW; }
             }
 
 %%
-

src/libexpr/nixexpr.cc

@@ -267,7 +267,7 @@ void ExprVar::bindVars(const StaticEnv & env)
     /* Otherwise, the variable must be obtained from the nearest
        enclosing `with'.  If there is no `with', then we can issue an
        "undefined variable" error now. */
-    if (withLevel == -1) 
+    if (withLevel == -1)
         throw UndefinedVarError({
             .hint = hintfmt("undefined variable '%1%'", name),
             .nixCode = NixCode { .errPos = pos }