Unicode: specify destination length in utf8_to_utf16 methods

Change-Id: I5223caa7d42f4582a982609a898a02043265c6d3
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index e53a551..244da27 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -784,7 +784,7 @@
     const uint8_t* strData = (uint8_t*)str.data();
     const size_t strLen= str.length();
     const ssize_t utf16Len = utf8_to_utf16_length(strData, strLen);
-    if (utf16Len < 0 || utf16Len> std::numeric_limits<int32_t>::max()) {
+    if (utf16Len < 0 || utf16Len > std::numeric_limits<int32_t>::max()) {
         return BAD_VALUE;
     }
 
@@ -799,7 +799,7 @@
         return NO_MEMORY;
     }
 
-    utf8_to_utf16(strData, strLen, (char16_t*)dst);
+    utf8_to_utf16(strData, strLen, (char16_t*)dst, (size_t) utf16Len + 1);
 
     return NO_ERROR;
 }