First note that your image class is likeordislike, yet your selector is likeordisklike (with an extra k), so it will never apply. You'll also want to remove the width from it (to prevent stretching), and give it a taller height.
Now that the image is sorted, the text can be vertically aligned to the middle by:
This can be seen in the following:
img.likeordislike {
height: 50px;
margin-right: 4px;
}
h4.liketext {
color: #F00;
display: inline-block;
height: 50px;
vertical-align: middle;
}
<img class='likeordislike' src='data:image/png;base64,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'>
<h4 class='liketext'>Twitter</h4>