Make sure not to try to set empty text to clipboard

renderdocui/Windows/APIInspector.cs

@@ -275,7 +275,8 @@ namespace renderdocui.Windows
                     text += string.Format("{0,-5}  {1}" + Environment.NewLine, n[0].ToString(), n[1].ToString());
                 }
 
-                Clipboard.SetText(text);
+                if (text.Length > 0)
+                    Clipboard.SetText(text);
             }
         }
 
@@ -291,7 +292,8 @@ namespace renderdocui.Windows
                     text += n.ToString() + Environment.NewLine;
                 }
 
-                Clipboard.SetText(text);
+                if (text.Length > 0)
+                    Clipboard.SetText(text);
             }
         }
 

renderdocui/Windows/Dialogs/ConstantBufferPreviewer.cs

@@ -280,7 +280,8 @@ namespace renderdocui.Controls
                     text += string.Format(fmt, n[0], n[1], n[2]);
                 }
 
-                Clipboard.SetText(text);
+                if (text.Length > 0)
+                    Clipboard.SetText(text);
             }
         }
 

renderdocui/Windows/EventBrowser.cs

@@ -670,7 +670,8 @@ namespace renderdocui.Windows
                     }
                     text += Environment.NewLine;
 
-                    Clipboard.SetText(text);
+                    if (text.Length > 0)
+                        Clipboard.SetText(text);
                 }
             }
         }