Add garlic and rosemary to pan and saute 20 seconds, then add 1/4 cup chicken broth and simmer until mostly reduced. Stir in orange zest, orange juice, lemon juice and honey. In a small bowl whisk together remaining 1 Tbsp chicken broth with cornstarch. Pour into pan, season sauce with salt and pepper to taste then bring to a boil and allow to boil 1 minute, stirring constantly. Return salmon to pan, spoon sauce over salmon.