[Glitch] Run eslint --fix

I don't like it changing files this way, but it's basically what
c49213f0ea and a few others did.

app/javascript/flavours/glitch/features/ui/components/media_modal.js

@@ -47,27 +47,27 @@ class MediaModal extends ImmutablePureComponent {
 
   handleSwipe = (index) => {
     this.setState({ index: index % this.props.media.size });
-  }
+  };
 
   handleTransitionEnd = () => {
     this.setState({
       zoomButtonHidden: false,
     });
-  }
+  };
 
   handleNextClick = () => {
     this.setState({
       index: (this.getIndex() + 1) % this.props.media.size,
       zoomButtonHidden: true,
     });
-  }
+  };
 
   handlePrevClick = () => {
     this.setState({
       index: (this.props.media.size + this.getIndex() - 1) % this.props.media.size,
       zoomButtonHidden: true,
     });
-  }
+  };
 
   handleChangeIndex = (e) => {
     const index = Number(e.currentTarget.getAttribute('data-index'));
@@ -76,7 +76,7 @@ class MediaModal extends ImmutablePureComponent {
       index: index % this.props.media.size,
       zoomButtonHidden: true,
     });
-  }
+  };
 
   handleKeyDown = (e) => {
     switch(e.key) {
@@ -91,7 +91,7 @@ class MediaModal extends ImmutablePureComponent {
       e.stopPropagation();
       break;
     }
-  }
+  };
 
   componentDidMount () {
     window.addEventListener('keydown', this.handleKeyDown, false);