Make parser recovering more robust to avoid infinite loops

Fixes #75

In order to avoid cascaded errors, I went ahead and made the parser refuse to skip past a `}` in recovery mode. The problem with this is that we fail to make forward progress if we are stuck on a `}` (this happens if you have an extra `}` at the global scope.

1 files changed, 6 insertions, 0 deletions

diff --git a/tests/bugs/gh-75.hlsl.expected b/tests/bugs/gh-75.hlsl.expected
new file mode 100644
index 000000000..345acd804
--- /dev/null
+++ b/tests/bugs/gh-75.hlsl.expected
@@ -0,0 +1,6 @@
+result code = -1
+standard error = {
+tests/bugs/gh-75.hlsl(24): error 20001: unexpected '}', expected identifier
+}
+standard output = {
+}