Update ggml/src/ggml-fp8.cpp

Oups.

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>

Author: Djip007

ggml/src/ggml-fp8.cpp

@@ -36,7 +36,7 @@ struct FP8 {
 #ifdef GGML_USE_OPENMP_SIMD
     #pragma omp declare simd
 #endif
-    void operator=(float value) {
+    FP8& operator=(float value) {
         union {
             float f;
             uint32_t bits;
@@ -55,6 +55,7 @@ struct FP8 {
             in.bits += 1<<(22-M()); // for rounding
             bits |= (in.bits >> (23-M())) & 0x7F;
         }
+        return *this;
     }
 
 #ifdef GGML_USE_OPENMP_SIMD