syntax fix

Author: martin-frbg

kernel/Makefile

@@ -28,7 +28,7 @@ endif
 ifdef TARGET_CORE
 ifeq ($(TARGET_CORE), ARMV9SME)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE) -march=armv9-a+sve2+sme
- ifdef (OS_WINDOWS)
+ ifdef OS_WINDOWS
  ifeq ($(C_COMPILER), CLANG)
    override CFLAGS += --aarch64-stack-hazard-size=0
  endif
@@ -39,11 +39,12 @@ ifeq ($(TARGET_CORE), VORTEXM4)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE) -UHAVE_SME -march=armv8.4-a
   else
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE) -march=armv8.4-a+sme
-   ifdef (OS_WINDOWS)
+   ifdef OS_WINDOWS
    ifeq ($(C_COMPILER), CLANG)
    override CFLAGS += --aarch64-stack-hazard-size=0
    endif
    endif
+  endif
 endif
 ifeq ($(TARGET_CORE), SAPPHIRERAPIDS)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE)