Fix wrong header file name in QMLJS

Fix a qmake warning introduced in e1b44e87 .

Change-Id: I8f7913ceabc411044785634d1708fbc035b0a5c4
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/libs/qmljs/qmljs-lib.pri

@@ -41,7 +41,7 @@ HEADERS += \
     $$PWD/qmljsqrcparser.h \
     $$PWD/qmljsconstants.h \
     $$PWD/qmljsimportdependencies.h \
-    $$PWD/viewercontext.h
+    $$PWD/qmljsviewercontext.h
 
 SOURCES += \
     $$PWD/qmljsbind.cpp \