Merge pull request #3376 from martin-frbg/issue3370

Fix a few harmless compiler warnings

kernel/x86_64/sgemv_n_4.c

@@ -115,6 +115,8 @@ static void sgemv_kernel_4x4(BLASLONG n, FLOAT **ap, FLOAT *xo, FLOAT *y, FLOAT
 	
 #endif
 
+#ifndef HAVE_SGEMV_N_SKYLAKE_KERNEL				
+
 #ifndef HAVE_KERNEL_4x2
 
 static void sgemv_kernel_4x2( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, FLOAT *alpha) __attribute__ ((noinline));
@@ -170,6 +172,7 @@ static void sgemv_kernel_4x2( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, FLOAT
 
 } 
 
+#endif
 #endif
 
 #ifndef HAVE_KERNEL_4x1