fixed usage of qmake message function

tools/linuxdeployqt/linuxdeployqt.pro

@@ -12,7 +12,7 @@ load(qt_tool)
 
 HEADERS += shared.h
 SOURCES += main.cpp \
-	shared.cpp
+    shared.cpp
 
 DEFINES -= QT_USE_QSTRINGBUILDER #leads to compile errors if not disabled
 
@@ -27,10 +27,10 @@ DEFINES += BUILD_DATE="'\"$(shell env LC_ALL=C date -u '+%Y-%m-%d %H:%M:%S %Z')\
 _BUILD_NUMBER = $$(TRAVIS_BUILD_NUMBER)
 
 isEmpty(_BUILD_NUMBER) {
-    message(Not building on Travis CI, tagging build as local dev build)
+    message("Not building on Travis CI, tagging build as local dev build")
     DEFINES += BUILD_NUMBER="'\"<local dev build>\"'"
 } else {
-    message(Building on Travis CI build, build number $$_BUILD_NUMBER)
+    message("Building on Travis CI build, build number $$_BUILD_NUMBER")
     DEFINES += BUILD_NUMBER="'\"$$_BUILD_NUMBER\"'"
 }