MOD: modified bracketing in linux build script

build_scripts/linux/linux_gcc_build_x64_debug_system.sh

@@ -104,7 +104,7 @@ then
 	if [ ${BUILD_ERROR_OCCURED} = "0" ]
 	then
         echo "Building the '${CYAN}lib4neuro${NC}' project for ${WHITE}Debug${NC} (building)"
-        cmake --build . --config Debug -- -j${N_CORES} && echo "${GREEN}Build complete${NC}." || `echo "${RED}Build finished with errors${NC}!"; export BUILD_ERROR_OCCURED=1;`
+        cmake --build . --config Debug -- -j${N_CORES} && echo "${GREEN}Build complete${NC}." || echo "${RED}Build finished with errors${NC}!"; BUILD_ERROR_OCCURED=1;
 	fi
 
     cd build_scripts/linux