ICU-8286 Merge fix for #8378 (intltest assertion fail, spoof/testConfData) into maint-4-6 for ICU4C 4.6.1.

X-SVN-Rev: 29579
diff --git a/source/i18n/uspoof_impl.cpp b/source/i18n/uspoof_impl.cpp
index 9e3595e..790c8c8 100644
--- a/source/i18n/uspoof_impl.cpp
+++ b/source/i18n/uspoof_impl.cpp
@@ -210,7 +210,7 @@
         U_ASSERT(ix < stringLengthsLimit);
     }
 
-    U_ASSERT(value + stringLen < fSpoofData->fRawData->fCFUStringTableLen);
+    U_ASSERT(value + stringLen <= fSpoofData->fRawData->fCFUStringTableLen);
     UChar *src = &fSpoofData->fCFUStrings[value];
     for (ix=0; ix<stringLen; ix++) {
         destBuf[ix] = src[ix];