Fix syntax

Author: DilumAluthge

test/runtests.jl

@@ -250,7 +250,7 @@ end
         if Sys.iswindows()
             @info "Skipping the examples/MyLib test on Windows"
             @test_skip false
-        else
+        elseif
             if Sys.isapply()
                 @info "Skipping the examples/MyLib test on macOS"
                 @test_skip false
@@ -287,8 +287,7 @@ end
                 my_run(`$(GNUMake_jll.make()) build-library`)
                 my_run(`$(GNUMake_jll.make()) build-executable`)
                 my_run(`$(GNUMake_jll.make()) clean`)
-
-            end
-        end
-    end # testset
-end
+            end # cd
+        end # if-elseif-else-end
+    end # testset "examples/MyLib"
+end # testset "PackageCompiler.jl"