C++: replace deprecated vsprintf and sprintf

With future C++ compilers the methods vsprintf and sprintf are declared as deprecated due to security issues.
They are replaced with the secure counterpart of the fmt library

Fixes the compiler warnings -Wdeprecated-declarations

src/Mod/Drawing/Gui/TaskOrthoViews.cpp

@@ -26,6 +26,7 @@
 #include <QMenu>
 #endif
 
+#include <fmt/printf.h>
 #include <App/Document.h>
 #include <Gui/Application.h>
 #include <Gui/BitmapFactory.h>
@@ -176,8 +177,8 @@ void orthoview::set_data(int r_x, int r_y)
     rel_x = r_x;
     rel_y = r_y;
 
-    char label[15];
-    sprintf(label, "Ortho_%i_%i", rel_x, rel_y);  // label name for view, based on relative position
+    // label name for view, based on relative position
+    std::string label = fmt::sprintf("Ortho_%i_%i", rel_x, rel_y);
 
     this_view->Label.setValue(label);
     ortho = ((rel_x * rel_y) == 0);

src/Mod/Mesh/App/WildMagic4/Wm4System.cpp

@@ -893,7 +893,7 @@ int System::Sprintf (char* acDst, size_t uiDstSize, const char* acFormat, ...)
 #ifdef WM4_USING_VC80
     int iNumWritten = vsprintf_s(acDst,uiDstSize,acFormat,acArgs);
 #else
-    int iNumWritten = vsprintf(acDst,acFormat,acArgs);
+    int iNumWritten = vsnprintf(acDst,uiDstSize,acFormat,acArgs);
 #endif
 
     va_end(acArgs);