Rust: Discard sources with spaces in inline flow tests

Author: Event Hall For Launch

rust/ql/lib/utils/test/InlineFlowTest.qll

@@ -34,10 +34,9 @@ private module FlowTestImpl implements InputSig<Location, RustDataFlow> {
  result = src.asExpr().(CallExprCfgNode).getArgument(0).toString()
  or
  sourceNode(src, _) and
- exists(CallExprBase call |
- call = src.(Node::FlowSummaryNode).getSourceElement().getCall() and
- result = call.getArgList().getArg(0).toString()
- )
+ result = src.(Node::FlowSummaryNode).getSourceElement().getCall().getArg(0).toString() and
+ // Don't use the result if it contains spaces
+ not result.matches("% %")
  }
 
  bindingset[src, sink]