Fix iss windows branding path trailing newline (#166)

Author: heatray

exe/package.iss.m4

@@ -5,7 +5,7 @@
 #define sPublisherUrl       'M4_PUBLISHER_URL'
 #define sSupportUrl         'M4_SUPPORT_URL'
 
-#define sBrandingFolder     'esyscmd(cygpath -a -w M4_BRANDING_DIR)'
+#define sBrandingFolder     'esyscmd(echo -n $(cygpath -a -w M4_BRANDING_DIR))'
 #define sDbDefValue         'M4_ONLYOFFICE_VALUE'
 
 #include "common.iss"