[compiler-rt] [compiler-rt][ubsan][nfc-ish] Fix a type conversion bug (PR #100665)

[Anton Korobeynikov via llvm-commits]

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@@ -27,7 +27,7 @@
           : "=r"(ret)                   \
           : "r"(__value)                \
           : "x30");                     \
-      ret;                              \
+      __typeof(__value) ret;            \
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asl wrote:

Oh, no, not here :)

https://github.com/llvm/llvm-project/pull/100665