vst3: user common files in the default path

source/frontend/carla_shared.py

@@ -357,6 +357,7 @@ if WINDOWS:
     splitter = ";"
 
     APPDATA = os.getenv("APPDATA")
+    LOCALAPPDATA = os.getenv("LOCALAPPDATA", APPDATA)
     PROGRAMFILES = os.getenv("PROGRAMFILES")
     PROGRAMFILESx86 = os.getenv("PROGRAMFILES(x86)")
     COMMONPROGRAMFILES = os.getenv("COMMONPROGRAMFILES")
@@ -391,6 +392,7 @@ if WINDOWS:
         DEFAULT_VST2_PATH  += ";" + COMMONPROGRAMFILES + "\\VST2"
 
     DEFAULT_VST3_PATH    = COMMONPROGRAMFILES + "\\VST3"
+    DEFAULT_VST3_PATH   += ";" + LOCALAPPDATA + "\\Programs\\Common\\VST3"
 
     DEFAULT_SF2_PATH     = APPDATA + "\\SF2"
     DEFAULT_SFZ_PATH     = APPDATA + "\\SFZ"