Fix build date for from-tarball builds

src/version.cpp

@@ -36,7 +36,7 @@ const std::string CLIENT_NAME("Satoshi");
 // git will put "#define GIT_ARCHIVE 1" on the next line inside archives. $Format:%n#define GIT_ARCHIVE 1$
 #ifdef GIT_ARCHIVE
 #    define GIT_COMMIT_ID "$Format:%h$"
-#    define GIT_COMMIT_DATE "$Format:%cD"
+#    define GIT_COMMIT_DATE "$Format:%cD$"
 #endif
 
 #define BUILD_DESC_FROM_COMMIT(maj,min,rev,build,commit) \