Fix an if-elseif

Author: DilumAluthge

test/runtests.jl

@@ -250,10 +250,9 @@ end
         if Sys.iswindows()
             @info "Skipping the examples/MyLib test on Windows"
             @test_skip false
-        elseif
-            if Sys.isapply()
-                @info "Skipping the examples/MyLib test on macOS"
-                @test_skip false
+        elseif Sys.isapple()
+            @info "Skipping the examples/MyLib test on macOS"
+            @test_skip false
         else
             rootdir_testdir = @__DIR__
             rootdir = dirname(rootdir_testdir)