Fix use of uninitialized variables in GetWordAtPosition when the position is not in a word

Originally committed to SVN as r6271.

aegisub/src/scintilla_text_ctrl.cpp

@@ -86,26 +86,28 @@ void ScintillaTextCtrl::SetUnicodeStyling(int start,int length,int style) {
 
 /// @brief Get boundaries of word at position 
 void ScintillaTextCtrl::GetBoundsOfWordAtPosition(int pos,int &start,int &end) {
-	// Results
 	IntPairVector results;
 	GetWordBoundaries(GetText(), results);
 
 	// Get boundaries
-	int count = results.size();
+	for (size_t i = 0; i < results.size(); i++) {
-	for (int i = 0; i < count; i++) {
 		if (results[i].first <= pos && results[i].second >= pos) {
 			start = results[i].first;
-			end = results[i].second - 1;
+			end = results[i].second;
 			return;
 		}
 	}
+
+	// Word not found
+	start = 0;
+	end = 0;
 }
 
 /// @brief Get word at specified position 
 wxString ScintillaTextCtrl::GetWordAtPosition(int pos) {
 	int start,end;
-	GetBoundsOfWordAtPosition(pos,start,end);
+	GetBoundsOfWordAtPosition(pos, start, end);
-	return GetText().Mid(start, end - start + 1);
+	return GetText().Mid(start, end - start);
 }
 
 /// @brief Set selection, unicode-aware 

aegisub/src/subs_edit_ctrl.cpp

@@ -869,11 +869,11 @@ void SubsTextEditCtrl::OnUseSuggestion(wxCommandEvent &event) {
 	}
 
 	// Get boundaries of text being replaced
-	int start,end;
+	int start, end;
-	GetBoundsOfWordAtPosition(currentWordPos,start,end);
+	GetBoundsOfWordAtPosition(currentWordPos, start, end);
 
 	wxString text = GetText();
-	SetText(text.Left(std::max(0,start)) + suggestion + text.Mid(end+1));
+	SetText(text.Left(std::max(0, start)) + suggestion + text.Mid(end));
 
 	// Set selection
 	SetSelectionU(start,start+suggestion.Length());