Add test case for or on a new line silently being ignored

Issue #1886

test cases/failing/55 or on new line/meson.build

@@ -0,0 +1,13 @@
+project('silent_or', 'c')
+
+if get_option('foo') == 'true' or get_option('foo') == 'auto'
+
+else
+        error('This case is fine - this error isn't triggered.')
+endif
+
+if get_option('foo') == 'true'
+        or get_option('foo') == 'auto'
+else
+        error('This error is triggered because the or statement is silently ignored.')
+endif

test cases/failing/55 or on new line/meson_options.txt

@@ -0,0 +1 @@
+option('foo', type: 'combo', choices: ['true', 'false', 'auto'], value: 'auto')