Added missing fillWhite class for logo

• Added:
- missing fillWhite class for logo

app/javascript/gabsocial/components/error_boundary.js

@@ -69,7 +69,7 @@ class ErrorBoundary extends React.PureComponent {
 
               <h1 className={[_s.d, _s.mr15].join(' ')}>
                 <Button href='/' isText aria-label='Gab' className={[_s.d, _s.jcCenter, _s.noSelect, _s.noUnderline, _s.h53PX, _s.cursorPointer, _s.px10, _s.mr15].join(' ')}>
-                  <Icon id='logo' className={_s.cWhite} />
+                  <Icon id='logo' className={_s.fillWhite} />
                 </Button>
               </h1>
 

app/javascript/styles/global.css

@@ -990,6 +990,10 @@ pre {
   background-color: var(--navigation_blend);
 }
 
+.fillWhite {
+  fill: var(--color_white);
+}
+
 .fillNavigation {
   fill: var(--navigation_primary);
 }