[clang] [NFC][Driver] Clean up RenderFloatingPointOptions() (PR #91017)

[Zahira Ammarguellat via cfe-commits]

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@@ -3152,6 +3125,12 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
       }
       break;
     }
+    // The StrictFPModel local variable is needed to report warnings
+    // in the wat we intend. If -ffp-model=strict has been used, we
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zahiraam wrote:

in the "way" we intend?

https://github.com/llvm/llvm-project/pull/91017