Add graphviz to BR to fix 'dot' not found error (#1721702)

wxGTK3.spec

@@ -18,7 +18,7 @@
 
 Name:           %{wxgtkname}
 Version:        3.0.4
-Release:        8%{?snapshottag}%{?dist}
+Release:        9%{?snapshottag}%{?dist}
 Summary:        GTK port of the wxWidgets GUI library
 License:        wxWidgets
 URL:            https://www.wxwidgets.org/
@@ -58,6 +58,7 @@ BuildRequires:  gettext
 BuildRequires:  cppunit-devel
 BuildRequires:  libmspack-devel
 BuildRequires:  doxygen
+BuildRequires:  graphviz
 
 Provides:       %{srcname} = %{version}-%{release}
 Provides:       bundled(scintilla) = 3.2.1
@@ -440,6 +441,9 @@ fi
 %doc html
 
 %changelog
+* Tue Jun 18 2019 Scott Talbert <swt@techie.net> - 3.0.4-9
+- Add graphviz to BR to fix 'dot' not found error (#1721702)
+
 * Thu Mar 07 2019 Scott Talbert <swt@techie.net> - 3.0.4-8
 - Avoid crashing when wxGLCanvas is used on Wayland