Debugger: Fix std::wstring dumpers

Change-Id: I16bc987a71978012a8a4faec8a7f2055412c97f5
Reviewed-by: hjk <hjk121@nokiamail.com>

share/qtcreator/dumper/qttypes.py

@@ -2138,10 +2138,10 @@ def qdump__std__string(d, value):
         encodingType = Hex2EncodedLatin1
         displayType = DisplayLatin1String
     elif charType.sizeof == 2:
-        encodingType = Hex4EncodedLatin1
+        encodingType = Hex4EncodedLittleEndian
         displayType = DisplayUtf16String
     else:
-        encodinfType = Hex8EncodedLatin1
+        encodingType = Hex8EncodedLittleEndian
         displayType = DisplayUtf16String
 
     d.putAddress(value.address)

tests/auto/debugger/tst_dumpers.cpp

@@ -2352,7 +2352,8 @@ void tst_Dumpers::dumper_data()
                     "str += \"e\";\n"
                     "wstr += wchar_t('e');\n"
                     "wstr += wchar_t('e');\n"
-                    "str += \"e\";\n")
+                    "str += \"e\";\n"
+                    "unused(&str0, &str, &wstr0, &wstr);\n")
                % Check("str0", "\"\"", "std::string")
                % Check("wstr0", "\"\"", "std::wstring")
                % Check("str", "\"bdebdee\"", "std::string")