ICU-21801 Fix array comparison warning in uspoof_impl.cpp

See #2015

diff --git a/icu4c/source/i18n/uspoof_impl.cpp b/icu4c/source/i18n/uspoof_impl.cpp
index b283d813210d9d9c237c24e631e8ea8097413b94..f96826f86ccc1294ed8ae2ffea85b93615004f19 100644 (file)
--- a/icu4c/source/i18n/uspoof_impl.cpp
+++ b/icu4c/source/i18n/uspoof_impl.cpp
@@ -945,7 +945,7 @@ uspoof_swap(const UDataSwapper *ds, const void *inData, int32_t length, void *ou
     uint32_t magic = ds->readUInt32(spoofDH->fMagic);
     ds->writeUInt32((uint32_t *)&outputDH->fMagic, magic);
 
-    if (outputDH->fFormatVersion != spoofDH->fFormatVersion) {
+    if (inBytes != outBytes) {
         uprv_memcpy(outputDH->fFormatVersion, spoofDH->fFormatVersion, sizeof(spoofDH->fFormatVersion));
     }
     // swap starting at fLength