Separate parameters like pre-existing -u entries

Author: earlephilhower

tools/platformio-build.py

@@ -89,12 +89,12 @@ def scons_patched_match_splitext(path, suffixes=None):
         "-Wl,-wrap,spi_flash_read",
         "-u", "app_entry",
         "-u", "_printf_float",
-        "-u", "_scanf_float"
-        "-u _DebugExceptionVector",
-        "-u _DoubleExceptionVector",
-        "-u _KernelExceptionVector",
-        "-u _NMIExceptionVector",
-        "-u _UserExceptionVector"
+        "-u", "_scanf_float",
+        "-u", "_DebugExceptionVector",
+        "-u", "_DoubleExceptionVector",
+        "-u", "_KernelExceptionVector",
+        "-u", "_NMIExceptionVector",
+        "-u", "_UserExceptionVector"
     ],
 
     CPPDEFINES=[