Some little fixes

src/Base/FileInfo.cpp

@@ -154,6 +154,7 @@ std::string FileInfo::getTempFileName(const char* FileName, const char* Path)
 
     // this already creates the file
     GetTempFileNameW(path.c_str(),file.c_str(),0,buf);
+    DeleteFileW(buf);
 
     return std::string(ConvertFromWideString(std::wstring(buf)));
 #else

src/Mod/Sketcher/App/SketchObject.cpp

@@ -165,6 +165,8 @@ int SketchObject::solve()
         for (std::vector<Part::Geometry *>::iterator it = geomlist.begin(); it != geomlist.end(); ++it)
             if (*it) delete *it;
     }
+
+    return err;
 }
 
 int SketchObject::setDatum(int ConstrId, double Datum)