Fix broken logic for hidden pins.

Fixes https://gitlab.com/kicad/code/kicad/issues/11771

(cherry picked from commit b710982875)

eeschema/lib_symbol.cpp

@@ -932,13 +932,16 @@ const EDA_RECT LIB_SYMBOL::GetBodyBoundingBox( int aUnit, int aConvert, bool aIn
         {
             const LIB_PIN& pin = static_cast<const LIB_PIN&>( item );
 
-            // Note: the roots of the pins are always included for symbols that don't have a
-            // well-defined body.
+            if( pin.IsVisible() )
+            {
+                // Note: the roots of the pins are always included for symbols that don't have
+                // a well-defined body.
 
-            if( aIncludePins && pin.IsVisible() )
-                bbox.Merge( pin.GetBoundingBox( false, true ) );
-            else
-                bbox.Merge( pin.GetPinRoot() );
+                if( aIncludePins )
+                    bbox.Merge( pin.GetBoundingBox( false, true ) );
+                else
+                    bbox.Merge( pin.GetPinRoot() );
+            }
         }
         else
         {