formatting and a few minor changes

src/libexpr/primops/context.cc

@@ -151,7 +151,6 @@ static void prim_appendContext(EvalState & state, const Pos & pos, Value * * arg
                     .hint = hintfmt("Context key '%s' is not a store path", i.name),
                     .nixCode = NixCode { .errPos = *i.pos }
                 });
-
         if (!settings.readOnlyMode)
             state.store->ensurePath(state.store->parseStorePath(i.name));
         state.forceAttrs(*i.value, *i.pos);
@@ -170,7 +169,6 @@ static void prim_appendContext(EvalState & state, const Pos & pos, Value * * arg
                             .hint = hintfmt("Tried to add all-outputs context of %s, which is not a derivation, to a string", i.name),
                             .nixCode = NixCode { .errPos = *i.pos }
                         });
-
                 }
                 context.insert("=" + string(i.name));
             }

src/libexpr/primops/fetchMercurial.cc

@@ -43,7 +43,6 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
                         .hint = hintfmt("unsupported argument '%s' to 'fetchMercurial'", attr.name),
                         .nixCode = NixCode { .errPos = *attr.pos }
                     });
-
         }
 
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